-5 to 25°C
temperature
2375 hours
sunshine per day
551 mm
rain
175 days
dry
136 days
rain
54 days
snow

Climate of Charleston

Charleston has a continental climate. It is warm in the summer and cold in the winter. The average annual temperature for Charleston is 11° degrees and there is about 550 mm of rain in a year. It is dry for 175 days a year with an average humidity of 83% 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 -12°C and 15°C
  • Rain: it rains 136 days and there is a total of approximately 551 mm rainfall
  • Snow: it snows an average of 54 days per year
  • Sun hours: throughout the year there are 2375 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 -12°C and 15°C
Dry days: 175 days
Days with rain: 136 days
Days with snow: 54 days
Total rain sum: 551 mm
Hours of sunshine: 2375 hours

Temperature graph

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

Precipitation graph

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

Climate table of Charleston

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

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Day temp. (°C) -5 -3 2 11 18 21 25 24 21 13 6 -1
Night temp. (°C) -12 -11 -5 2 8 12 15 15 11 6 0 -6
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Precipitation (mm) 39 44 34 59 47 48 53 53 41 51 34 48
Days with rain 5 5 8 14 15 15 16 15 12 13 9 9
Days with snow 13 13 9 3 - - - - - 1 4 11
Dry days 13 10 14 13 16 15 15 16 18 17 17 11
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sun hours per day 3 3 5 7 9 9 11 11 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 4 5 6 5 3 2 2 1

Best time to visit Charleston

The best time to visit Charleston in Canada is from May through September. In this period you have a pleasant temperature and little precipitation. The highest average temperature in Charleston is 25°C in July and the lowest is -5°C in January.

Climate of Charleston by month

What is the average climate in a given month for Charleston? 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.

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