Sea weather in Asahi in Japan All the beach weather in Asahi

All the essential weather information for enjoying the beach in Asahi in Japan, for swimming, tanning or water sports! Our sea weather data is reliable, easy to read and updated every day.

Weather: When should you go to the beach in Asahi over the next 7 days?

Discover the best moment to go to the beach in Asahi in Japan this week to enjoy the best weather and calmest sea possible. Our opinion is based on reliable sea weather forecasts in Asahi. You can see full forecasts by clicking on the day you want to see in the table below.

Date Outside temp. Our opinion
Monday 15 December 202549°F to 54°Fdiscouraged
Tuesday 16 December 202547°F to 50°Frecommended
Wednesday 17 December 202549°F to 56°Frecommended
Thursday 18 December 202550°F to 54°Fdiscouraged
Friday 19 December 202550°F to 58°Frecommended
Saturday 20 December 202554°F to 65°Fdiscouraged
Sunday 21 December 202565°F to 67°Fnot recommended

Sea Weather: Your daily and hourly sea weather in Asahi

Sea weather on Monday 15 December 2025

On Monday 15 December 2025, the sun will rise at 06:39 and will set at 16:24 on the beach(es) of Asahi. The outside temperature will be a high of 54°F t and a low of 49°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 24.9mph km/h (with gusts up to 34.8mph). Wave height will be up to 6.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature10°C (51°F)11°C (52°F)10°C (49°F)10°C (51°F)11°C (52°F)11°C (52°F)9°C (48°F)10°C (49°F)
Perceived temperature8°C (46°F)7°C (45°F)6°C (43°F)7°C (45°F)9°C (47°F)8°C (47°F)6°C (43°F)7°C (45°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity78%47%55%51%39%34%38%46%
Barometric pressure1002 hPa1005 hPa1009 hPa1013 hPa1013 hPa1015 hPa1018 hPa1020 hPa
Cloud cover0%8%3%7%9%6%5%5%
Heat index10°C (51°F)11°C (52°F)10°C (49°F)10°C (51°F)11°C (52°F)11°C (52°F)9°C (48°F)10°C (49°F)
Dew point7°C (44°F)0°C (32°F)1°C (34°F)1°C (33°F)-2°C (28°F)-4°C (25°F)-4°C (24°F)-1°C (29°F)
Wind
Speed23km/h (14mph)40km/h (25mph)34km/h (21mph)24km/h (15mph)22km/h (13mph)30km/h (18mph)23km/h (14mph)14km/h (9mph)
Gusts35km/h (22mph)56km/h (35mph)46km/h (29mph)30km/h (19mph)31km/h (19mph)46km/h (29mph)40km/h (25mph)20km/h (12mph)
Direction 269°
W
300°
WNW
294°
WNW
307°
NW
316°
NW
328°
NNW
341°
NNW
347°
NNW
Wind chill8°C (46°F)7°C (45°F)6°C (43°F)7°C (45°F)9°C (47°F)8°C (47°F)6°C (43°F)7°C (45°F)
Waves
Height2.0m (6.7ft)1.7m (5.4ft)1.5m (5.0ft)1.3m (4.4ft)1.2m (4.0ft)1.1m (3.5ft)0.9m (2.9ft)0.8m (2.6ft)
Direction 147°
SSE
149°
SSE
147°
SSE
142°
SE
134°
SE
133°
SE
128°
SE
112°
ESE
Period10.6 sec.10.2 sec.10.1 sec.9.8 sec.9.5 sec.9.2 sec.8.9 sec.8.6 sec.
Significant height0.8m (2.6ft)1.4m (4.6ft)1.9m (6.2ft)1.7m (5.6ft)1.4m (4.6ft)1.1m (3.6ft)0.8m (2.6ft)0.7m (2.3ft)
Sea water temperature
Water temperature19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)

Sea weather on Tuesday 16 December 2025

On Tuesday 16 December 2025, the sun will rise at 06:39 and will set at 16:24 on the beach(es) of Asahi. The outside temperature will be a high of 50°F t and a low of 47°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 7.5mph km/h (with gusts up to 11.8mph). Wave height will be up to 2.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature9°C (48°F)9°C (49°F)9°C (49°F)10°C (49°F)10°C (50°F)10°C (50°F)9°C (49°F)10°C (50°F)
Perceived temperature8°C (46°F)8°C (46°F)8°C (46°F)8°C (47°F)10°C (49°F)10°C (51°F)9°C (49°F)9°C (47°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity45%48%54%55%56%56%58%60%
Barometric pressure1020 hPa1020 hPa1021 hPa1022 hPa1019 hPa1019 hPa1020 hPa1019 hPa
Cloud cover43%67%77%80%100%100%21%0%
Heat index9°C (48°F)9°C (49°F)9°C (49°F)10°C (49°F)10°C (50°F)10°C (50°F)9°C (49°F)10°C (50°F)
Dew point-2°C (28°F)-1°C (30°F)0°C (33°F)1°C (34°F)1°C (35°F)2°C (35°F)2°C (35°F)3°C (37°F)
Wind
Speed8km/h (5mph)10km/h (6mph)10km/h (6mph)8km/h (5mph)5km/h (3mph)3km/h (2mph)3km/h (2mph)12km/h (8mph)
Gusts11km/h (7mph)14km/h (9mph)14km/h (9mph)11km/h (7mph)7km/h (5mph)5km/h (3mph)4km/h (3mph)19km/h (12mph)
Direction 340°
NNW
354°
N
357°
N

N
10°
N

N
225°
SW
235°
SW
Wind chill8°C (46°F)8°C (46°F)8°C (46°F)8°C (47°F)10°C (49°F)10°C (51°F)9°C (49°F)9°C (47°F)
Waves
Height0.8m (2.6ft)0.8m (2.7ft)0.8m (2.5ft)0.7m (2.4ft)0.7m (2.3ft)0.7m (2.2ft)0.7m (2.2ft)0.7m (2.3ft)
Direction 62°
ENE
59°
ENE
57°
ENE
62°
ENE
66°
ENE
70°
ENE
71°
ENE
72°
ENE
Period12.8 sec.12.8 sec.12.6 sec.12.7 sec.12.6 sec.13.1 sec.13.1 sec.12.9 sec.
Significant height0.7m (2.3ft)0.8m (2.6ft)0.7m (2.3ft)0.7m (2.3ft)0.6m (2ft)0.6m (2ft)0.6m (2ft)0.7m (2.3ft)
Sea water temperature
Water temperature19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)

Sea weather on Wednesday 17 December 2025

On Wednesday 17 December 2025, the sun will rise at 06:40 and will set at 16:25 on the beach(es) of Asahi. The outside temperature will be a high of 56°F t and a low of 49°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 7.5mph km/h (with gusts up to 11.2mph). Wave height will be up to 2.3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature10°C (50°F)9°C (49°F)9°C (48°F)11°C (52°F)12°C (54°F)12°C (54°F)12°C (54°F)12°C (54°F)
Perceived temperature8°C (47°F)8°C (46°F)8°C (46°F)10°C (51°F)12°C (53°F)11°C (52°F)11°C (52°F)12°C (53°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity59%62%58%50%52%61%65%67%
Barometric pressure1018 hPa1017 hPa1018 hPa1020 hPa1018 hPa1018 hPa1019 hPa1019 hPa
Cloud cover3%1%9%9%71%75%92%72%
Heat index10°C (50°F)9°C (49°F)9°C (48°F)11°C (52°F)12°C (54°F)12°C (54°F)12°C (54°F)12°C (54°F)
Dew point2°C (36°F)2°C (36°F)1°C (34°F)1°C (34°F)3°C (37°F)5°C (41°F)6°C (43°F)6°C (44°F)
Wind
Speed11km/h (7mph)12km/h (7mph)10km/h (6mph)7km/h (4mph)7km/h (4mph)11km/h (7mph)9km/h (5mph)9km/h (6mph)
Gusts17km/h (11mph)18km/h (11mph)16km/h (10mph)10km/h (6mph)10km/h (6mph)16km/h (10mph)13km/h (8mph)13km/h (8mph)
Direction 265°
W
322°
NW
339°
NNW
10°
N
41°
NE
62°
ENE
56°
ENE
13°
NNE
Wind chill8°C (47°F)8°C (46°F)8°C (46°F)10°C (51°F)12°C (53°F)11°C (52°F)11°C (52°F)12°C (53°F)
Waves
Height0.7m (2.2ft)0.6m (2.1ft)0.6m (2.1ft)0.6m (2.0ft)0.6m (2.0ft)0.6m (2.0ft)0.7m (2.2ft)0.7m (2.5ft)
Direction 75°
ENE
76°
ENE
76°
ENE
80°
E
81°
E
82°
E
75°
ENE
75°
ENE
Period12.5 sec.12.1 sec.11.9 sec.11.3 sec.11.0 sec.10.9 sec.10.8 sec.10.6 sec.
Significant height0.6m (2ft)0.6m (2ft)0.7m (2.3ft)0.6m (2ft)0.6m (2ft)0.6m (2ft)0.6m (2ft)0.7m (2.3ft)
Sea water temperature
Water temperature19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)

Sea weather on Thursday 18 December 2025

On Thursday 18 December 2025, the sun will rise at 06:41 and will set at 16:25 on the beach(es) of Asahi. The outside temperature will be a high of 54°F t and a low of 50°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 19.3mph km/h (with gusts up to 24.2mph). Wave height will be up to 3.3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature11°C (52°F)10°C (50°F)10°C (51°F)11°C (51°F)10°C (50°F)10°C (50°F)11°C (51°F)11°C (52°F)
Perceived temperature8°C (47°F)7°C (45°F)8°C (46°F)8°C (46°F)8°C (46°F)8°C (46°F)9°C (48°F)10°C (50°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity83%80%68%59%57%55%59%59%
Barometric pressure1019 hPa1021 hPa1023 hPa1026 hPa1025 hPa1026 hPa1027 hPa1027 hPa
Cloud cover100%100%59%19%47%39%68%42%
Heat index11°C (52°F)10°C (50°F)10°C (51°F)11°C (51°F)10°C (50°F)10°C (50°F)11°C (51°F)11°C (52°F)
Dew point9°C (47°F)7°C (45°F)5°C (40°F)3°C (37°F)2°C (36°F)2°C (35°F)3°C (37°F)4°C (39°F)
Wind
Speed31km/h (19mph)27km/h (17mph)22km/h (14mph)22km/h (14mph)21km/h (13mph)17km/h (11mph)14km/h (9mph)10km/h (6mph)
Gusts39km/h (25mph)36km/h (22mph)29km/h (18mph)27km/h (17mph)26km/h (16mph)24km/h (15mph)20km/h (12mph)14km/h (9mph)
Direction 20°
NNE

N
16°
NNE
30°
NNE
40°
NE
53°
NE
66°
ENE
88°
E
Wind chill8°C (47°F)7°C (45°F)8°C (46°F)8°C (46°F)8°C (46°F)8°C (46°F)9°C (48°F)10°C (50°F)
Waves
Height0.9m (2.9ft)0.9m (2.9ft)0.9m (2.9ft)0.9m (3.0ft)0.9m (3.1ft)1.0m (3.2ft)1.0m (3.1ft)0.9m (3.1ft)
Direction 73°
ENE
74°
ENE
73°
ENE
73°
ENE
73°
ENE
73°
ENE
73°
ENE
73°
ENE
Period10.3 sec.17.4 sec.4.8 sec.16.1 sec.15.9 sec.15.3 sec.14.7 sec.14.6 sec.
Significant height0.9m (3ft)0.7m (2.3ft)0.8m (2.6ft)0.7m (2.3ft)0.8m (2.6ft)1.2m (3.9ft)1.0m (3.3ft)1.0m (3.3ft)
Sea water temperature
Water temperature19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)

Sea weather on Friday 19 December 2025

On Friday 19 December 2025, the sun will rise at 06:41 and will set at 16:26 on the beach(es) of Asahi. The outside temperature will be a high of 58°F t and a low of 50°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 8.1mph km/h (with gusts up to 11.8mph). Wave height will be up to 4.3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature12°C (54°F)12°C (54°F)13°C (55°F)13°C (56°F)14°C (58°F)12°C (53°F)11°C (51°F)13°C (55°F)
Perceived temperature11°C (52°F)12°C (53°F)12°C (53°F)13°C (55°F)14°C (57°F)12°C (53°F)11°C (51°F)12°C (53°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity60%69%77%78%67%58%56%56%
Barometric pressure1026 hPa1026 hPa1026 hPa1027 hPa1026 hPa1026 hPa1027 hPa1028 hPa
Cloud cover81%100%95%83%31%0%0%0%
Heat index12°C (54°F)12°C (54°F)13°C (55°F)13°C (56°F)14°C (58°F)12°C (53°F)11°C (51°F)13°C (55°F)
Dew point5°C (40°F)7°C (44°F)9°C (48°F)10°C (49°F)8°C (47°F)4°C (39°F)2°C (36°F)5°C (40°F)
Wind
Speed8km/h (5mph)8km/h (5mph)11km/h (7mph)9km/h (5mph)9km/h (6mph)5km/h (3mph)4km/h (2mph)13km/h (8mph)
Gusts11km/h (7mph)12km/h (7mph)15km/h (9mph)12km/h (7mph)12km/h (8mph)11km/h (7mph)8km/h (5mph)19km/h (12mph)
Direction 113°
ESE
114°
ESE
39°
NE
14°
NNE
316°
NW
273°
W
234°
SW
244°
WSW
Wind chill11°C (52°F)12°C (53°F)12°C (53°F)13°C (55°F)14°C (57°F)12°C (53°F)11°C (51°F)12°C (53°F)
Waves
Height0.9m (2.9ft)0.9m (2.9ft)0.9m (2.9ft)0.9m (2.8ft)0.9m (2.9ft)0.9m (3.1ft)1.0m (3.3ft)1.3m (4.1ft)
Direction 73°
ENE
71°
ENE
72°
ENE
74°
ENE
76°
ENE
76°
ENE
75°
ENE
76°
ENE
Period14.4 sec.13.9 sec.13.3 sec.13.1 sec.13.0 sec.12.8 sec.4.7 sec.11.8 sec.
Significant height0.8m (2.6ft)0.8m (2.6ft)1.0m (3.3ft)1.0m (3.3ft)1.0m (3.3ft)1.0m (3.3ft)1.2m (3.9ft)1.3m (4.3ft)
Sea water temperature
Water temperature19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)

Sea weather on Saturday 20 December 2025

On Saturday 20 December 2025, the sun will rise at 06:42 and will set at 16:26 on the beach(es) of Asahi. The outside temperature will be a high of 65°F t and a low of 54°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 18.6mph km/h (with gusts up to 29.8mph). Wave height will be up to 4.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature12°C (54°F)13°C (55°F)13°C (55°F)15°C (58°F)17°C (63°F)18°C (65°F)18°C (64°F)18°C (64°F)
Perceived temperature11°C (52°F)11°C (52°F)11°C (52°F)13°C (56°F)17°C (63°F)18°C (65°F)18°C (64°F)18°C (64°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity59%69%73%73%72%69%69%71%
Barometric pressure1027 hPa1027 hPa1027 hPa1027 hPa1025 hPa1024 hPa1025 hPa1025 hPa
Cloud cover0%0%40%71%76%77%87%81%
Heat index12°C (54°F)13°C (55°F)13°C (55°F)15°C (58°F)17°C (63°F)18°C (65°F)18°C (64°F)18°C (64°F)
Dew point4°C (40°F)7°C (45°F)8°C (47°F)10°C (50°F)12°C (54°F)12°C (54°F)12°C (53°F)13°C (55°F)
Wind
Speed13km/h (8mph)14km/h (9mph)15km/h (9mph)17km/h (11mph)26km/h (16mph)30km/h (19mph)25km/h (15mph)27km/h (17mph)
Gusts20km/h (12mph)23km/h (14mph)25km/h (15mph)25km/h (15mph)36km/h (23mph)48km/h (30mph)26km/h (16mph)43km/h (27mph)
Direction 249°
WSW
233°
SW
244°
WSW
232°
SW
216°
SW
210°
SSW
210°
SSW
204°
SSW
Wind chill11°C (52°F)11°C (52°F)11°C (52°F)13°C (56°F)17°C (63°F)18°C (65°F)18°C (64°F)18°C (64°F)
Waves
Height1.4m (4.6ft)1.4m (4.8ft)1.4m (4.7ft)1.3m (4.2ft)1.2m (4.1ft)1.3m (4.4ft)1.3m (4.2ft)1.2m (3.8ft)
Direction 130°
SE
132°
SE
134°
SE
132°
SE
132°
SE
135°
SE
136°
SE
134°
SE
Period6.0 sec.6.3 sec.6.6 sec.6.8 sec.6.8 sec.6.9 sec.6.9 sec.6.9 sec.
Significant height0.8m (2.6ft)0.9m (3ft)0.7m (2.3ft)0.4m (1.3ft)0.1m (0.3ft)0.1m (0.3ft)0.1m (0.3ft)0.3m (1ft)
Sea water temperature
Water temperature19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)

Sea weather on Sunday 21 December 2025

On Sunday 21 December 2025, the sun will rise at 06:42 and will set at 16:26 on the beach(es) of Asahi. The outside temperature will be a high of 67°F t and a low of 65°F. Precipitation is in the forecast (0.1in throughout the day): choose the right time to go to the beach and dodge the raindrops. Be careful, the sea will be generally rough with a wind speed of up to 33.6mph km/h (with gusts up to 35.4mph). Wave height will be up to 6.9ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature18°C (64°F)18°C (65°F)18°C (65°F)19°C (66°F)19°C (66°F)19°C (66°F)18°C (64°F)18°C (65°F)
Perceived temperature18°C (64°F)18°C (65°F)18°C (65°F)19°C (66°F)19°C (66°F)19°C (66°F)18°C (64°F)18°C (65°F)
Precipitation0in0in0in0in0in0in0.1in0in
Humidity74%74%73%69%70%74%88%90%
Barometric pressure1024 hPa1023 hPa1021 hPa1021 hPa1017 hPa1014 hPa1012 hPa1009 hPa
Cloud cover63%55%89%81%83%87%100%100%
Heat index18°C (64°F)18°C (65°F)18°C (65°F)19°C (66°F)19°C (66°F)19°C (66°F)18°C (64°F)18°C (65°F)
Dew point13°C (56°F)13°C (56°F)14°C (56°F)13°C (56°F)13°C (56°F)14°C (57°F)16°C (60°F)16°C (62°F)
Wind
Speed27km/h (17mph)29km/h (18mph)32km/h (20mph)37km/h (23mph)40km/h (25mph)45km/h (28mph)49km/h (30mph)54km/h (33mph)
Gusts43km/h (27mph)45km/h (28mph)48km/h (30mph)54km/h (34mph)44km/h (28mph)51km/h (32mph)54km/h (34mph)57km/h (35mph)
Direction 200°
SSW
195°
SSW
184°
S
178°
S
171°
S
171°
S
165°
SSE
172°
S
Wind chill18°C (64°F)18°C (65°F)18°C (65°F)19°C (66°F)19°C (66°F)19°C (66°F)18°C (64°F)18°C (65°F)
Waves
Height1.1m (3.5ft)1.0m (3.4ft)1.1m (3.7ft)1.5m (4.9ft)1.6m (5.3ft)1.7m (5.6ft)1.8m (6.0ft)2.1m (7.0ft)
Direction 132°
SE
131°
SE
133°
SE
141°
SE
141°
SE
143°
SE
146°
SSE
153°
SSE
Period6.8 sec.6.8 sec.6.9 sec.10.1 sec.10.0 sec.9.9 sec.13.6 sec.13.5 sec.
Significant height0.2m (0.7ft)1.0m (3.3ft)0.2m (0.7ft)1.2m (3.9ft)1.0m (3.3ft)1.2m (3.9ft)1.3m (4.3ft)1.7m (5.6ft)
Sea water temperature
Water temperature17°C (62°F)17°C (62°F)17°C (62°F)17°C (62°F)17°C (62°F)17°C (62°F)17°C (62°F)17°C (62°F)

Sea weather chart over the next 7 days

Outside temperature

Wind speed

Precipitation

Wave height

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