Sea weather in Nagasaki in Japan All the beach weather in Nagasaki

All the essential weather information for enjoying the beach in Nagasaki 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 Nagasaki over the next 7 days?

Discover the best moment to go to the beach in Nagasaki in Japan this week to enjoy the best weather and calmest sea possible. Our opinion is based on reliable sea weather forecasts in Nagasaki. 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 202541°F to 52°Fdiscouraged
Tuesday 16 December 202549°F to 58°Frecommended
Wednesday 17 December 202554°F to 61°Frecommended
Thursday 18 December 202547°F to 54°Frecommended
Friday 19 December 202550°F to 58°Frecommended
Saturday 20 December 202558°F to 61°Frecommended
Sunday 21 December 202556°F to 61°Fdiscouraged

Sea Weather: Your daily and hourly sea weather in Nagasaki

Sea weather on Monday 15 December 2025

On Monday 15 December 2025, the sun will rise at 07:15 and will set at 17:16 on the beach(es) of Nagasaki. The outside temperature will be a high of 52°F t and a low of 41°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 24.2mph). Wave height will be up to 5.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature10°C (50°F)10°C (50°F)10°C (49°F)10°C (50°F)11°C (52°F)8°C (47°F)6°C (43°F)9°C (48°F)
Perceived temperature6°C (44°F)7°C (44°F)7°C (44°F)8°C (46°F)9°C (48°F)6°C (43°F)4°C (39°F)8°C (46°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity55%55%55%54%52%53%63%67%
Barometric pressure1021 hPa1022 hPa1023 hPa1024 hPa1024 hPa1023 hPa1024 hPa1025 hPa
Cloud cover100%89%88%48%67%1%0%4%
Heat index10°C (50°F)10°C (50°F)10°C (49°F)10°C (50°F)11°C (52°F)8°C (47°F)6°C (43°F)9°C (48°F)
Dew point1°C (34°F)1°C (34°F)1°C (34°F)1°C (34°F)2°C (35°F)-1°C (31°F)-1°C (31°F)3°C (38°F)
Wind
Speed30km/h (19mph)26km/h (16mph)21km/h (13mph)16km/h (10mph)17km/h (10mph)15km/h (9mph)10km/h (6mph)9km/h (5mph)
Gusts39km/h (24mph)34km/h (21mph)28km/h (18mph)21km/h (13mph)21km/h (13mph)30km/h (19mph)22km/h (14mph)14km/h (9mph)
Direction 323°
NW
326°
NNW
334°
NNW
351°
N
332°
NNW
322°
NW
321°
NW
325°
NW
Wind chill6°C (44°F)7°C (44°F)7°C (44°F)8°C (46°F)9°C (48°F)6°C (43°F)4°C (39°F)8°C (46°F)
Waves
Height1.7m (5.4ft)1.5m (4.9ft)1.2m (3.8ft)1.0m (3.2ft)0.8m (2.8ft)0.7m (2.4ft)0.6m (2.0ft)0.5m (1.7ft)
Direction 295°
WNW
295°
WNW
292°
WNW
293°
WNW
290°
WNW
292°
WNW
289°
WNW
284°
WNW
Period9.2 sec.9.2 sec.9.2 sec.12.1 sec.11.5 sec.6.4 sec.6.2 sec.5.9 sec.
Significant height1.4m (4.6ft)1.1m (3.6ft)0.9m (3ft)0.7m (2.3ft)0.6m (2ft)1.1m (3.6ft)0.6m (2ft)0.5m (1.6ft)
Sea water temperature
Water temperature19°C (67°F)19°C (67°F)19°C (67°F)19°C (67°F)19°C (67°F)19°C (67°F)19°C (67°F)19°C (67°F)

Sea weather on Tuesday 16 December 2025

On Tuesday 16 December 2025, the sun will rise at 07:16 and will set at 17:17 on the beach(es) of Nagasaki. The outside temperature will be a high of 58°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 5.6mph km/h (with gusts up to 7.5mph). Wave height will be up to 1.3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature9°C (48°F)9°C (47°F)9°C (48°F)11°C (51°F)13°C (55°F)14°C (56°F)12°C (54°F)12°C (54°F)
Perceived temperature8°C (46°F)8°C (47°F)9°C (48°F)11°C (52°F)13°C (56°F)13°C (56°F)13°C (55°F)12°C (54°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity69%71%71%65%56%57%64%67%
Barometric pressure1024 hPa1024 hPa1024 hPa1025 hPa1024 hPa1023 hPa1024 hPa1024 hPa
Cloud cover8%10%32%26%29%76%81%66%
Heat index9°C (48°F)9°C (47°F)9°C (48°F)11°C (51°F)13°C (55°F)14°C (56°F)12°C (54°F)12°C (54°F)
Dew point4°C (38°F)4°C (38°F)4°C (39°F)4°C (40°F)4°C (40°F)5°C (41°F)6°C (42°F)7°C (44°F)
Wind
Speed7km/h (4mph)4km/h (2mph)4km/h (2mph)3km/h (2mph)4km/h (3mph)9km/h (5mph)4km/h (2mph)2km/h (1mph)
Gusts11km/h (7mph)7km/h (4mph)6km/h (4mph)4km/h (3mph)6km/h (4mph)12km/h (8mph)7km/h (4mph)3km/h (2mph)
Direction 332°
NNW

N
34°
NNE
79°
ENE
215°
SW
235°
SW
252°
WSW
347°
NNW
Wind chill8°C (46°F)8°C (47°F)9°C (48°F)11°C (52°F)13°C (56°F)13°C (56°F)13°C (55°F)12°C (54°F)
Waves
Height0.4m (1.5ft)0.4m (1.2ft)0.3m (1.0ft)0.3m (0.9ft)0.2m (0.8ft)0.2m (0.7ft)0.3m (0.9ft)0.3m (0.9ft)
Direction 285°
WNW
274°
W
266°
W
264°
W
261°
W
261°
W
285°
WNW
285°
WNW
Period5.6 sec.5.2 sec.5.6 sec.5.5 sec.5.2 sec.5.0 sec.4.1 sec.4.1 sec.
Significant height0.4m (1.3ft)0.3m (1ft)0.3m (1ft)0.3m (1ft)0.2m (0.7ft)0.2m (0.7ft)0.3m (1ft)0.3m (1ft)
Sea water temperature
Water temperature19°C (67°F)19°C (67°F)19°C (67°F)19°C (67°F)19°C (67°F)19°C (67°F)19°C (67°F)19°C (67°F)

Sea weather on Wednesday 17 December 2025

On Wednesday 17 December 2025, the sun will rise at 07:17 and will set at 17:17 on the beach(es) of Nagasaki. The outside temperature will be a high of 61°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 11.8mph km/h (with gusts up to 19.3mph). Wave height will be up to 2.3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature13°C (55°F)13°C (55°F)13°C (55°F)14°C (57°F)16°C (60°F)15°C (59°F)13°C (56°F)13°C (55°F)
Perceived temperature13°C (56°F)12°C (54°F)13°C (55°F)13°C (56°F)16°C (60°F)15°C (59°F)12°C (53°F)11°C (52°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity69%71%72%73%69%78%81%82%
Barometric pressure1023 hPa1022 hPa1022 hPa1022 hPa1020 hPa1019 hPa1021 hPa1022 hPa
Cloud cover57%54%69%27%85%89%54%73%
Heat index13°C (55°F)13°C (55°F)13°C (55°F)14°C (57°F)16°C (60°F)15°C (59°F)13°C (56°F)13°C (55°F)
Dew point7°C (45°F)7°C (45°F)8°C (46°F)9°C (49°F)10°C (50°F)11°C (52°F)10°C (50°F)10°C (49°F)
Wind
Speed4km/h (2mph)7km/h (4mph)4km/h (3mph)11km/h (7mph)17km/h (11mph)19km/h (12mph)19km/h (12mph)12km/h (8mph)
Gusts6km/h (3mph)11km/h (7mph)7km/h (4mph)15km/h (9mph)23km/h (14mph)29km/h (18mph)31km/h (19mph)20km/h (12mph)
Direction 68°
ENE
100°
E
117°
ESE
125°
SE
185°
S
275°
W
333°
NNW

N
Wind chill13°C (56°F)12°C (54°F)13°C (55°F)13°C (56°F)16°C (60°F)15°C (59°F)12°C (53°F)11°C (52°F)
Waves
Height0.2m (0.7ft)0.2m (0.6ft)0.2m (0.7ft)0.5m (1.5ft)0.7m (2.5ft)0.7m (2.4ft)0.6m (2.1ft)0.6m (1.9ft)
Direction 282°
WNW
282°
WNW
283°
WNW
257°
WSW
257°
WSW
264°
W
259°
W
266°
W
Period3.9 sec.4.2 sec.3.7 sec.3.7 sec.3.7 sec.4.3 sec.4.4 sec.5.1 sec.
Significant height0.2m (0.7ft)0.3m (1ft)0.3m (1ft)0.6m (2ft)0.8m (2.6ft)0.9m (3ft)0.9m (3ft)0.7m (2.3ft)
Sea water temperature
Water temperature19°C (67°F)19°C (67°F)19°C (67°F)19°C (67°F)19°C (67°F)19°C (67°F)19°C (67°F)19°C (67°F)

Sea weather on Thursday 18 December 2025

On Thursday 18 December 2025, the sun will rise at 07:17 and will set at 17:17 on the beach(es) of Nagasaki. The outside temperature will be a high of 54°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 9.3mph km/h (with gusts up to 14.9mph). Wave height will be up to 1.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature12°C (54°F)12°C (53°F)11°C (51°F)11°C (53°F)12°C (53°F)12°C (53°F)9°C (48°F)11°C (52°F)
Perceived temperature10°C (51°F)10°C (50°F)9°C (48°F)10°C (51°F)11°C (52°F)12°C (54°F)9°C (48°F)10°C (50°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity84%78%75%71%54%46%55%67%
Barometric pressure1022 hPa1023 hPa1024 hPa1025 hPa1024 hPa1023 hPa1024 hPa1025 hPa
Cloud cover73%0%0%0%0%0%0%0%
Heat index12°C (54°F)12°C (53°F)11°C (51°F)11°C (53°F)12°C (53°F)12°C (53°F)9°C (48°F)11°C (52°F)
Dew point9°C (49°F)8°C (46°F)6°C (44°F)6°C (43°F)3°C (37°F)0°C (33°F)1°C (33°F)5°C (41°F)
Wind
Speed15km/h (9mph)15km/h (9mph)13km/h (8mph)10km/h (6mph)6km/h (4mph)3km/h (2mph)5km/h (3mph)9km/h (5mph)
Gusts22km/h (14mph)24km/h (15mph)22km/h (14mph)14km/h (9mph)12km/h (7mph)7km/h (4mph)10km/h (6mph)15km/h (9mph)
Direction 19°
NNE
15°
NNE
20°
NNE
27°
NNE
23°
NNE

N

N
31°
NNE
Wind chill10°C (51°F)10°C (50°F)9°C (48°F)10°C (51°F)11°C (52°F)12°C (54°F)9°C (48°F)10°C (50°F)
Waves
Height0.5m (1.7ft)0.5m (1.8ft)0.5m (1.8ft)0.5m (1.5ft)0.4m (1.4ft)0.4m (1.3ft)0.4m (1.2ft)0.3m (1.0ft)
Direction 270°
W
274°
W
286°
WNW
286°
WNW
290°
WNW
294°
WNW
295°
WNW
298°
WNW
Period5.3 sec.5.0 sec.5.5 sec.5.9 sec.5.8 sec.5.6 sec.5.5 sec.4.6 sec.
Significant height0.6m (2ft)0.8m (2.6ft)0.8m (2.6ft)0.6m (2ft)0.5m (1.6ft)0.5m (1.6ft)0.3m (1ft)0.3m (1ft)
Sea water temperature
Water temperature19°C (67°F)19°C (67°F)19°C (67°F)19°C (67°F)19°C (67°F)19°C (67°F)19°C (67°F)19°C (67°F)

Sea weather on Friday 19 December 2025

On Friday 19 December 2025, the sun will rise at 07:18 and will set at 17:18 on the beach(es) of Nagasaki. 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 4.4mph km/h (with gusts up to 8.1mph). Wave height will be up to 1.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature11°C (52°F)11°C (51°F)10°C (50°F)12°C (53°F)13°C (55°F)12°C (54°F)13°C (55°F)13°C (56°F)
Perceived temperature10°C (51°F)10°C (51°F)9°C (49°F)11°C (53°F)13°C (55°F)12°C (54°F)13°C (55°F)14°C (57°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity67%66%71%68%56%59%66%68%
Barometric pressure1025 hPa1025 hPa1025 hPa1025 hPa1024 hPa1022 hPa1023 hPa1024 hPa
Cloud cover0%0%0%0%0%0%10%15%
Heat index11°C (52°F)11°C (51°F)10°C (50°F)12°C (53°F)13°C (55°F)12°C (54°F)13°C (55°F)13°C (56°F)
Dew point5°C (41°F)5°C (40°F)5°C (42°F)6°C (43°F)4°C (40°F)4°C (40°F)6°C (44°F)8°C (46°F)
Wind
Speed7km/h (4mph)5km/h (3mph)7km/h (4mph)6km/h (4mph)1km/h (0mph)5km/h (3mph)2km/h (1mph)4km/h (2mph)
Gusts12km/h (7mph)9km/h (6mph)13km/h (8mph)9km/h (6mph)1km/h (1mph)10km/h (6mph)4km/h (2mph)7km/h (4mph)
Direction 50°
NE
77°
ENE
65°
ENE
72°
ENE
108°
ESE
268°
W
80°
E
127°
SE
Wind chill10°C (51°F)10°C (51°F)9°C (49°F)11°C (53°F)13°C (55°F)12°C (54°F)13°C (55°F)14°C (57°F)
Waves
Height0.2m (0.8ft)0.2m (0.6ft)0.1m (0.5ft)0.1m (0.4ft)0.5m (1.6ft)0.4m (1.4ft)0.4m (1.2ft)0.2m (0.5ft)
Direction 297°
WNW
288°
WNW
285°
WNW
284°
WNW
282°
WNW
281°
WNW
281°
WNW
281°
WNW
Period4.4 sec.4.9 sec.4.7 sec.4.6 sec.4.6 sec.4.6 sec.4.5 sec.4.5 sec.
Significant height0.2m (0.7ft)0.3m (1ft)0.3m (1ft)0.2m (0.7ft)0.1m (0.3ft)0.1m (0.3ft)0.1m (0.3ft)0.1m (0.3ft)
Sea water temperature
Water temperature19°C (67°F)19°C (67°F)19°C (67°F)19°C (67°F)19°C (67°F)19°C (67°F)19°C (67°F)19°C (67°F)

Sea weather on Saturday 20 December 2025

On Saturday 20 December 2025, the sun will rise at 07:18 and will set at 17:18 on the beach(es) of Nagasaki. The outside temperature will be a high of 61°F t and a low of 58°F. Precipitation is in the forecast (0.1in throughout the day): choose the right time to go to the beach and dodge the raindrops. The sea will be generally calm, with a wind speed of up to 6.8mph km/h (with gusts up to 11.8mph). Wave height will be up to 1.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature14°C (56°F)14°C (57°F)14°C (57°F)14°C (58°F)16°C (61°F)16°C (60°F)14°C (57°F)15°C (58°F)
Perceived temperature13°C (56°F)13°C (56°F)13°C (55°F)14°C (56°F)16°C (61°F)16°C (60°F)14°C (56°F)14°C (57°F)
Precipitation0in0in0in0in0in0in0in0.1in
Humidity73%74%75%76%66%74%92%95%
Barometric pressure1023 hPa1022 hPa1022 hPa1022 hPa1021 hPa1020 hPa1020 hPa1019 hPa
Cloud cover16%30%100%74%53%100%74%100%
Heat index14°C (56°F)14°C (57°F)14°C (57°F)14°C (58°F)16°C (61°F)16°C (60°F)14°C (57°F)15°C (58°F)
Dew point9°C (48°F)9°C (49°F)9°C (49°F)10°C (50°F)10°C (49°F)11°C (52°F)13°C (55°F)14°C (57°F)
Wind
Speed8km/h (5mph)9km/h (5mph)10km/h (6mph)11km/h (7mph)9km/h (5mph)9km/h (6mph)9km/h (6mph)9km/h (6mph)
Gusts14km/h (9mph)15km/h (9mph)18km/h (11mph)19km/h (12mph)13km/h (8mph)14km/h (8mph)17km/h (10mph)14km/h (9mph)
Direction 93°
E
105°
ESE
89°
E
81°
E
95°
E
119°
ESE
93°
E
64°
ENE
Wind chill13°C (56°F)13°C (56°F)13°C (55°F)14°C (56°F)16°C (61°F)16°C (60°F)14°C (56°F)14°C (57°F)
Waves
Height0.1m (0.3ft)0.5m (1.8ft)0.1m (0.4ft)0.2m (0.8ft)0.1m (0.3ft)0.4m (1.4ft)0.1m (0.3ft)0.1m (0.3ft)
Direction 279°
W
280°
W
9999°
40°
NE
42°
NE
270°
W
272°
W
281°
WNW
Period4.5 sec.4.5 sec.4.5 sec.4.5 sec.4.5 sec.4.5 sec.4.5 sec.4.5 sec.
Significant height0.6m (2ft)0.6m (2ft)0.6m (2ft)0.6m (2ft)0.5m (1.6ft)0.5m (1.6ft)0.5m (1.6ft)0.6m (2ft)
Sea water temperature
Water temperature19°C (67°F)19°C (67°F)19°C (67°F)19°C (67°F)19°C (67°F)19°C (67°F)19°C (67°F)19°C (67°F)

Sea weather on Sunday 21 December 2025

On Sunday 21 December 2025, the sun will rise at 07:19 and will set at 17:19 on the beach(es) of Nagasaki. The outside temperature will be a high of 61°F t and a low of 56°F. Precipitation is in the forecast (0.1in throughout the day): choose the right time to go to the beach and dodge the raindrops. The sea will be generally calm, with a wind speed of up to 18.6mph km/h (with gusts up to 27.3mph). Wave height will be up to 3.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature14°C (58°F)14°C (58°F)14°C (58°F)15°C (59°F)16°C (61°F)15°C (59°F)13°C (56°F)14°C (57°F)
Perceived temperature14°C (57°F)14°C (57°F)14°C (57°F)15°C (59°F)16°C (61°F)13°C (55°F)11°C (51°F)12°C (54°F)
Precipitation0in0in0.1in0in0in0in0in0in
Humidity93%94%95%93%91%79%76%76%
Barometric pressure1017 hPa1015 hPa1013 hPa1013 hPa1012 hPa1011 hPa1012 hPa1013 hPa
Cloud cover78%100%100%100%100%62%39%91%
Heat index14°C (58°F)14°C (58°F)14°C (58°F)15°C (59°F)16°C (61°F)15°C (59°F)13°C (56°F)14°C (57°F)
Dew point13°C (56°F)13°C (56°F)14°C (57°F)14°C (57°F)15°C (58°F)11°C (52°F)9°C (48°F)10°C (50°F)
Wind
Speed11km/h (7mph)11km/h (7mph)9km/h (6mph)5km/h (3mph)11km/h (7mph)29km/h (18mph)28km/h (18mph)30km/h (18mph)
Gusts17km/h (11mph)17km/h (10mph)14km/h (9mph)7km/h (5mph)15km/h (10mph)43km/h (27mph)44km/h (27mph)42km/h (26mph)
Direction 68°
ENE
88°
E
70°
ENE
93°
E
338°
NNW
335°
NNW
326°
NW
329°
NNW
Wind chill14°C (57°F)14°C (57°F)14°C (57°F)15°C (59°F)16°C (61°F)13°C (55°F)11°C (51°F)12°C (54°F)
Waves
Height0.1m (0.3ft)0.4m (1.5ft)0.1m (0.5ft)0.3m (1.1ft)0.7m (2.5ft)1.0m (3.4ft)0.9m (3.1ft)1.1m (3.5ft)
Direction 292°
WNW
297°
WNW
151°
SSE
184°
S
197°
SSW
220°
SW
220°
SW
245°
WSW
Period4.5 sec.4.5 sec.4.5 sec.4.5 sec.4.5 sec.4.5 sec.5.2 sec.5.6 sec.
Significant height0.6m (2ft)0.6m (2ft)0.6m (2ft)0.8m (2.6ft)0.9m (3ft)0.9m (3ft)1.4m (4.6ft)1.3m (4.3ft)
Sea water temperature
Water temperature19°C (67°F)19°C (67°F)19°C (67°F)19°C (67°F)19°C (67°F)19°C (67°F)19°C (67°F)19°C (67°F)

Sea weather chart over the next 7 days

Outside temperature

Wind speed

Precipitation

Wave height

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