10 to 17°C
temperature
2353 hours
sunshine per day
504 mm
rain
176 days
dry
189 days
rain
0 days
snow

Climate of St Mary's

The island St Mary's has a oceanic climate. There is rainfall during all months of the year. The average annual temperature for St Mary's is 13° degrees and there is about 503 mm of rain in a year. It is dry for 133 days a year with an average humidity of 81% and an UV-index of 4.

Climate averages for the whole year

  • Day: the average daily temperature during the day is between 10°C and 17°C
  • Night:the average nighttime temperature is between 8°C and 16°C
  • Rain: it rains 189 days and there is a total of approximately 504 mm rainfall
  • Sun hours: throughout the year there are 2353 sun hours
Maximum temperature: between 10°C and 17°C
Warmest month: 17°C in July
Coldest month: 10°C in January
Night temperature: between 8°C and 16°C
Dry days: 176 days
Days with rain: 189 days
Days with snow: 0 days
Total rain sum: 504 mm
Hours of sunshine: 2353 hours

Temperature graph

This graph shows the average maximum temperature (red) and minimum temperature (blue) for St Mary's.

Precipitation graph

This graph shows the average amount of rainfall per month for St Mary's.

Climate table of St Mary's

In this climate table you can see at a glance what the average weather per month is for St Mary's. 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 St Mary's might be like in a given month.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Day temp. (°C) 10 10 10 11 12 15 17 17 16 15 13 11
Night temp. (°C) 9 8 8 9 12 14 16 16 15 14 11 10
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Precipitation (mm) 58 41 40 41 23 20 36 35 26 52 68 64
Days with rain 20 15 15 15 13 11 15 15 14 16 20 20
Dry days 11 13 16 15 18 19 16 16 16 15 10 11
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sun hours per day 4 5 6 8 8 9 8 8 7 5 4 4
Wind force (Bft) 5 5 5 4 4 4 4 4 4 5 5 5
UV-index 3 3 3 3 4 4 4 5 4 4 3 3

Best time to visit St Mary's

The best time to visit St Mary's, England is July through September. In this period you have a pleasant temperature and almost no precipitation. On the island of St Mary's, the warmest month is July with 17°C and the coldest is January with 10°C.

Climate of St Mary's by month

What is the average climate in a given month for St Mary's? 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.

St Mary's weather experiences

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