9 to 15°C
temperature
2019 hours
sunshine per day
801 mm
rain
110 days
dry
255 days
rain
0 days
snow

Climate of Achill Island

The island Achill Island has a oceanic climate. There is rainfall during all months of the year. The average annual temperature for Achill Island is 12° degrees and there is about 801 mm of rain in a year. It is dry for 77 days a year with an average humidity of 80% and an UV-index of 3.

Climate averages for the whole year

  • Day: the average daily temperature during the day is between 9°C and 15°C
  • Night:the average nighttime temperature is between 7°C and 14°C
  • Rain: it rains 255 days and there is a total of approximately 801 mm rainfall
  • Sun hours: throughout the year there are 2019 sun hours
Maximum temperature: between 9°C and 15°C
Warmest month: 15°C in July
Coldest month: 9°C in January
Night temperature: between 7°C and 14°C
Dry days: 110 days
Days with rain: 255 days
Days with snow: 0 days
Total rain sum: 801 mm
Hours of sunshine: 2019 hours

Temperature graph

This graph shows the average maximum temperature (red) and minimum temperature (blue) for Achill Island.

Precipitation graph

This graph shows the average amount of rainfall per month for Achill Island.

Climate table of Achill Island

In this climate table you can see at a glance what the average weather per month is for Achill Island. The data has been collected over a 30-year period, from which an average per month has been derived. From year to year the differences may be larger or smaller, but with this climate table you have a good idea of what the weather for Achill Island might be like in a given month.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Day temp. (°C) 9 9 9 10 12 14 15 15 15 13 11 10
Night temp. (°C) 7 7 7 8 10 12 14 14 13 12 9 8
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Precipitation (mm) 85 70 62 51 50 40 55 61 55 90 84 98
Days with rain 24 20 20 18 19 18 21 24 21 22 23 25
Dry days 7 8 11 12 12 12 10 7 9 9 7 6
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sun hours per day 3 4 5 7 7 9 7 7 6 4 4 3
Wind force (Bft) 5 5 5 4 4 4 4 4 4 5 5 5
UV-index 2 2 3 3 4 4 3 4 4 3 3 3

Best time to visit Achill Island

The best time to visit Achill Island, Northern Ireland is January through November. In this period you have a very cold temperature and little precipitation. On the island of Achill Island, the warmest month is July with 15°C and the coldest is January with 9°C.

Climate of Achill Island by month

What is the average climate in a given month for Achill Island? Click on a month to see all monthly averages for sunshine, maximum and minimum temperatures, percent chance of rain per day, snowfall and number of rainy days.

Achill Island weather experiences

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