Annual mean 16°C · wettest around March · prevailing wind W
Warmest
30.9 °C
Coldest
5.9 °C
Wettest
66%
Windiest
4.8 m/s
Prevailing
W
3.7 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 Brentwood over the whole year is 16°C. July is the hottest month, with highs of about 31°C; January is the coldest, with lows of about 1°C. Brentwood has no sharply defined rainy season: the chance of rain on a given day runs from 50% in January, the driest month, to 58% in March, the wettest. Winds in Brentwood are highest in March, averaging 3.2 m/s (12 km/h), and lightest in September, at 1.8 m/s (6 km/h). The prevailing wind is from the W. The clearest skies in Brentwood come in September, when the sky is typically 27% covered; February is the cloudiest month, at 45%.
Month by month Brentwood 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
7°C
1°C
2°C
50%
45%
3.0 m/s
7
0
26
February
11°C
4°C
6°C
57%
45%
3.1 m/s
16
0
43
March
15°C
7°C
11°C
58%
36%
3.2 m/s
32
1
60
April
20°C
11°C
16°C
55%
34%
3.0 m/s
54
12
60
May
24°C
17°C
23°C
56%
35%
2.5 m/s
58
42
37
June
29°C
21°C
30°C
54%
28%
2.2 m/s
30
59
8
July
31°C
23°C
33°C
56%
30%
2.0 m/s
7
44
1
August
30°C
22°C
31°C
56%
32%
1.9 m/s
17
55
2
September
27°C
18°C
28°C
55%
27%
1.8 m/s
39
54
19
October
22°C
12°C
20°C
51%
30%
2.1 m/s
59
24
55
November
14°C
6°C
11°C
54%
31%
2.3 m/s
30
2
60
December
10°C
4°C
6°C
56%
40%
2.7 m/s
12
0
42
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 Brentwood weather by season
Year round, Brentwood has days of about 7°C at their warmest in January, its coolest month, and 31°C in July, its warmest; the coolest hours of the day run from 1°C to 23°C through the year, and the average temperature over the year is 16°C around the clock. Rain is most likely around March and least likely around January. 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.
Brentwood weather in winterDecember to February
High 9°CLow 3°CRain 54%
Winter in Brentwood has typical daily highs of about 9°C and lows of about 3°C, with a 54% chance of rain on a given day.
Brentwood weather in springMarch to May
High 20°CLow 11°CRain 56%
Spring in Brentwood has typical daily highs of about 20°C and lows of about 11°C, with a 56% chance of rain on a given day.
Brentwood weather in summerJune to August
High 30°CLow 22°CRain 55%
Summer in Brentwood has typical daily highs of about 30°C and lows of about 22°C, with a 55% chance of rain on a given day.
Brentwood weather in autumnSeptember to November
High 21°CLow 12°CRain 53%
Autumn in Brentwood has typical daily highs of about 21°C and lows of about 12°C, with a 53% chance of rain on a given day.
When is the rainy season in Brentwood?
Brentwood has no sharply defined rainy season: the chance of rain on a given day runs from 50% in January, the driest month, to 58% in March, the wettest.
What time of year is Brentwood windiest?
Winds in Brentwood are highest in March, averaging 3.2 m/s (12 km/h), and lightest in September, at 1.8 m/s (6 km/h). The prevailing wind is from the W.
What is the average temperature in Brentwood year round?
The average temperature in Brentwood over the whole year is 16°C. July is the hottest month, with highs of about 31°C; January is the coldest, with lows of about 1°C.