Swimming in Connemara National Park in september 2025: Average sea temperature in september and tide times in september 2025

Average sea temperature in Connemara National Park in september 2025.

In september, according to seasonal norms, the sea temperature in Connemara National Park is:

Minimum: 56°F

Average: 59°F

Maximum: 62°F

Other useful seasonal weather averages in september:

  • Outside temperature: 52°F to 58°F
  • Most common weather: "Cloudy"
  • The wind blows at 5.6mph
  • It rains a total of 3.7in, over 6 day(s).

Should we swim in Connemara National Park in september?

No... The water temperature in Connemara National Park in september is freezing

You won't be able to swim in Connemara National Park in september! The water temperature is freezing, reaching as low as 56°F (and only 62°F at best)! Our advice: if you are going to Connemara National Park this month, plan to sightsee and forget the beach!

Note also that in september, the climate is tolerable with an average outside temperature of 55°F, 3.7in of precipitation (over 6 days) and 90.67 % humidity.

Water and normal seasonal temperatures in Connemara National Park in september

September
Average sea temperature 59°F
Minimum sea temperature 56°F
Maximum sea temperature 62°F
Average outside temperature 56°F
Maximum outside temperature 59°F
Minimum outside temperature 52°F
Wind speed 14.9mph
Wind temperature 49°F
Precipitation 3.7in
Number of days of rain 6 jour(s)
(20%)
Humidity 91%
Visibility in kilometers 8.79km
Cloud cover 62%
Our opinion freezing swimming

Chart of the tides in september 2025

Tide times in september 2025 in Connemara National Park

Swim elsewhere in Ireland in september

City Average T° Max. T° Our opinion
Dublin in september59°F60°Ffreezing swimming
Cork in september61°F64°Fcold swimming
Galway in september59°F61°Ffreezing swimming
Belmullet in september59°F62°Ffreezing swimming
Dingle in september59°F63°Fcold swimming
Dundalk in september59°F60°Ffreezing swimming
Dungloe in september58°F60°Ffreezing swimming
Killybegs in september58°F60°Ffreezing swimming
Letterkenny in september58°F60°Ffreezing swimming
Achill Island in september59°F61°Ffreezing swimming
Cliffs of Moher in september59°F62°Fcold swimming
Donegal in september58°F60°Ffreezing swimming
Waterford in september61°F63°Fcold swimming
Wexford in september60°F61°Fcold swimming
Sligo in september59°F61°Ffreezing swimming
Westport in september59°F62°Ffreezing swimming

Swim in Ireland in september: sea temperature by city

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