Climate of Cornwall
Cornwall has a continental climate. It is warm in the summer and cold in the winter. The average annual temperature for Cornwall is 11° degrees and there is about 666 mm of rain in a year. It is dry for 137 days a year with an average humidity of 82% and an UV-index of 3.
Climate averages for the whole year
- Day: the average daily temperature during the day is between -5°C and 25°C
- Night:the average nighttime temperature is between -13°C and 15°C
- Sea temperature: the sea temperature is between -1°C and 20°C
- Rain: it rains 158 days and there is a total of approximately 666 mm rainfall
- Snow: it snows an average of 78 days per year
- Sun hours: throughout the year there are 2370 sun hours
Maximum temperature: | between -5°C and 25°C |
Warmest month: | 25°C in July |
Coldest month: | -5°C in January |
Night temperature: | between -13°C and 15°C |
Sea temperature: | between -1°C and 20°C |
Dry days: | 129 days |
Days with rain: | 158 days |
Days with snow: | 78 days |
Total rain sum: | 666 mm |
Hours of sunshine: | 2370 hours |
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Temperature graph
This graph shows the average maximum temperature (red) and minimum temperature (blue) for Cornwall.
Precipitation graph
This graph shows the average amount of rainfall per month for Cornwall.
Climate table of Cornwall
In this climate table you can see at a glance what the average weather per month is for Cornwall. 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 Cornwall might be like in a given month.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Day temp. (°C) | -5 | -4 | 2 | 10 | 19 | 22 | 25 | 25 | 21 | 13 | 6 | -1 |
Night temp. (°C) | -13 | -11 | -6 | 2 | 8 | 12 | 15 | 15 | 11 | 6 | -1 | -7 |
Water temp. (°C) | 3 | 0 | -1 | 2 | 9 | 14 | 19 | 20 | 19 | 15 | 10 | 8 |
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
Precipitation (mm) | 50 | 53 | 51 | 57 | 59 | 64 | 55 | 59 | 43 | 61 | 52 | 62 |
Days with rain | 7 | 7 | 11 | 16 | 16 | 17 | 17 | 16 | 13 | 15 | 12 | 11 |
Days with snow | 19 | 18 | 14 | 4 | - | - | - | - | - | 1 | 6 | 16 |
Dry days | 5 | 3 | 6 | 10 | 15 | 13 | 14 | 15 | 17 | 15 | 12 | 4 |
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
Sun hours per day | 3 | 3 | 5 | 7 | 9 | 9 | 11 | 10 | 9 | 5 | 5 | 3 |
Wind force (Bft) | 3 | 3 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 3 | 3 | 3 |
UV-index | 1 | 2 | 2 | 3 | 5 | 5 | 5 | 5 | 3 | 2 | 2 | 1 |
Best time to visit Cornwall
The best time to visit Cornwall in Canada is from May through September. In this period you have a pleasant temperature and little precipitation. The highest average temperature in Cornwall is 25°C in July and the lowest is -5°C in January. The maximum water temperature is 20°C and the lowest water temperature is -1°C.
Climate of Cornwall by month
What is the average climate in a given month for Cornwall? 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.
Cornwall weather experiences
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