Annual mean 19°C · wettest around August · prevailing wind W
Warmest
31.1 °C
Coldest
12.5 °C
Wettest
65%
Windiest
4.4 m/s
Prevailing
W
3.5 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Summerville over the whole year is 19°C. July is the hottest month, with highs of about 31°C; January is the coldest, with lows of about 6°C. Summerville has no sharply defined rainy season: the chance of rain on a given day runs from 61% in October, the driest month, to 65% in August, the wettest. Winds in Summerville are highest in March, averaging 3.0 m/s (11 km/h), and lightest in August, at 2.1 m/s (8 km/h). The prevailing wind is from the W. The clearest skies in Summerville come in April, when the sky is typically 36% covered; December is the cloudiest month, at 47%.
Month by month Summerville climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
13°C
6°C
10°C
63%
42%
2.5 m/s
25
2
55
February
17°C
9°C
14°C
63%
46%
2.7 m/s
46
7
65
March
19°C
11°C
16°C
63%
43%
3.0 m/s
56
10
66
April
23°C
14°C
21°C
62%
36%
2.9 m/s
70
30
51
May
27°C
19°C
27°C
63%
41%
2.7 m/s
48
55
22
June
29°C
23°C
31°C
65%
42%
2.5 m/s
16
53
4
July
31°C
24°C
34°C
65%
39%
2.2 m/s
3
30
0
August
30°C
24°C
33°C
65%
44%
2.1 m/s
7
38
1
September
28°C
21°C
30°C
64%
42%
2.3 m/s
26
55
9
October
24°C
16°C
24°C
61%
38%
2.2 m/s
61
43
38
November
19°C
11°C
16°C
63%
42%
2.3 m/s
52
12
66
December
15°C
8°C
12°C
64%
47%
2.3 m/s
36
3
62
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Summerville weather by season
Year round, Summerville has days of about 13°C at their warmest in January, its coolest month, and 31°C in July, its warmest; the coolest hours of the day run from 6°C to 24°C through the year, and the average temperature over the year is 19°C around the clock. Rain is most likely around August and least likely around October. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Summerville weather in winterDecember to February
High 15°CLow 8°CRain 64%
Winter in Summerville has typical daily highs of about 15°C and lows of about 8°C, with a 64% chance of rain on a given day.
Summerville weather in springMarch to May
High 23°CLow 15°CRain 63%
Spring in Summerville has typical daily highs of about 23°C and lows of about 15°C, with a 63% chance of rain on a given day.
Summerville weather in summerJune to August
High 30°CLow 23°CRain 65%
Summer in Summerville has typical daily highs of about 30°C and lows of about 23°C, with a 65% chance of rain on a given day.
Summerville weather in autumnSeptember to November
High 24°CLow 16°CRain 63%
Autumn in Summerville has typical daily highs of about 24°C and lows of about 16°C, with a 63% chance of rain on a given day.
When is the rainy season in Summerville?
Summerville has no sharply defined rainy season: the chance of rain on a given day runs from 61% in October, the driest month, to 65% in August, the wettest.
What time of year is Summerville windiest?
Winds in Summerville are highest in March, averaging 3.0 m/s (11 km/h), and lightest in August, at 2.1 m/s (8 km/h). The prevailing wind is from the W.
What is the average temperature in Summerville year round?
The average temperature in Summerville over the whole year is 19°C. July is the hottest month, with highs of about 31°C; January is the coldest, with lows of about 6°C.