Climate of Sully Island
The island Sully Island has a oceanic climate. There is rainfall during all months of the year. The average annual temperature for Sully Island is 13° degrees and there is about 153 mm of rain in a year. It is dry for 207 days a year with an average humidity of 84% and an UV-index of 3.
Climate averages for the whole year
- Day: the average daily temperature during the day is between 7°C and 19°C
- Night:the average nighttime temperature is between 4°C and 13°C
- Rain: it rains 114 days and there is a total of approximately 153 mm rainfall
- Snow: it snows an average of 3 days per year
- Sun hours: throughout the year there are 2278 sun hours
Maximum temperature: | between 7°C and 19°C |
Warmest month: | 19°C in July |
Coldest month: | 7°C in January |
Night temperature: | between 4°C and 13°C |
Dry days: | 248 days |
Days with rain: | 114 days |
Days with snow: | 3 days |
Total rain sum: | 153 mm |
Hours of sunshine: | 2278 hours |
Temperature graph
This graph shows the average maximum temperature (red) and minimum temperature (blue) for Sully Island.
Precipitation graph
This graph shows the average amount of rainfall per month for Sully Island.
Climate table of Sully Island
In this climate table you can see at a glance what the average weather per month is for Sully 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 Sully Island might be like in a given month.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Day temp. (°C) | 7 | 8 | 10 | 12 | 15 | 17 | 19 | 18 | 17 | 14 | 11 | 9 |
Night temp. (°C) | 4 | 4 | 4 | 6 | 8 | 11 | 13 | 13 | 11 | 10 | 7 | 5 |
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
Precipitation (mm) | 12 | 12 | 12 | 5 | 15 | 10 | 10 | 15 | 8 | 15 | 20 | 19 |
Days with rain | 10 | 7 | 9 | 8 | 9 | 8 | 10 | 11 | 9 | 9 | 12 | 12 |
Days with snow | 1 | 1 | - | - | - | - | - | - | - | - | - | 1 |
Dry days | 20 | 20 | 22 | 22 | 22 | 22 | 21 | 20 | 21 | 22 | 18 | 18 |
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
Sun hours per day | 4 | 4 | 6 | 8 | 8 | 8 | 8 | 8 | 7 | 5 | 4 | 4 |
Wind force (Bft) | 4 | 4 | 4 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 4 | 4 |
UV-index | 2 | 2 | 2 | 3 | 4 | 4 | 4 | 4 | 4 | 3 | 2 | 2 |
Best time to visit Sully Island
The best time to visit Sully Island, Wales is in July and August. In this period you have a pleasant temperature and almost no precipitation. On the island of Sully Island, the warmest month is July with 19°C and the coldest is January with 7°C.
Climate of Sully Island by month
What is the average climate in a given month for Sully 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.
Sully Island weather experiences
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