Annual mean 18°C · wettest around February · prevailing wind E
Warmest
23.0 °C
Coldest
19.8 °C
Wettest
77%
Windiest
4.0 m/s
Prevailing
E
3.1 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
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 San Ramón over the whole year is 18°C. November is the hottest month, with highs of about 22°C; June is the coldest, with lows of about 12°C. The rainy (wet) season in San Ramón runs from October to April, peaking in February with a 43% chance of rain on a given day. The dry season is May to September; August is the driest month, at 21%. Winds in San Ramón are highest in September, averaging 2.7 m/s (10 km/h), and lightest in March, at 2.1 m/s (8 km/h). The prevailing wind is from the E. The clearest skies in San Ramón come in July, when the sky is typically 59% covered; February is the cloudiest month, at 77%.
Month by month San Ramón 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
21°C
16°C
21°C
36%
75%
2.4 m/s
53
23
53
February
21°C
16°C
20°C
43%
77%
2.3 m/s
52
25
51
March
21°C
16°C
21°C
34%
74%
2.1 m/s
50
27
50
April
22°C
15°C
21°C
33%
62%
2.2 m/s
47
26
51
May
21°C
14°C
20°C
24%
67%
2.1 m/s
65
21
58
June
21°C
12°C
19°C
29%
65%
2.1 m/s
53
20
63
July
20°C
12°C
18°C
21%
59%
2.4 m/s
49
21
63
August
22°C
13°C
21°C
21%
61%
2.3 m/s
56
23
57
September
22°C
14°C
21°C
22%
69%
2.7 m/s
61
21
56
October
22°C
15°C
21°C
34%
75%
2.6 m/s
56
16
57
November
22°C
16°C
22°C
34%
75%
2.6 m/s
56
28
48
December
21°C
16°C
21°C
35%
71%
2.4 m/s
64
22
53
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 San Ramón weather by season
Year round, San Ramón has days of about 20°C at their warmest in July, its coolest month, and 22°C in November, its warmest; the coolest hours of the day run from 12°C to 16°C through the year, and the average temperature over the year is 18°C around the clock. Rain is most likely around February and least likely around August. 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.
San Ramón weather in winterJune to August
High 21°CLow 12°CRain 24%
Winter in San Ramón has typical daily highs of about 21°C and lows of about 12°C, with a 24% chance of rain on a given day.
San Ramón weather in springSeptember to November
High 22°CLow 15°CRain 30%
Spring in San Ramón has typical daily highs of about 22°C and lows of about 15°C, with a 30% chance of rain on a given day.
San Ramón weather in summerDecember to February
High 21°CLow 16°CRain 38%
Summer in San Ramón has typical daily highs of about 21°C and lows of about 16°C, with a 38% chance of rain on a given day.
San Ramón weather in autumnMarch to May
High 21°CLow 15°CRain 30%
Autumn in San Ramón has typical daily highs of about 21°C and lows of about 15°C, with a 30% chance of rain on a given day.
When is the rainy season in San Ramón?
The rainy (wet) season in San Ramón runs from October to April, peaking in February with a 43% chance of rain on a given day. The dry season is May to September; August is the driest month, at 21%.
What time of year is San Ramón windiest?
Winds in San Ramón are highest in September, averaging 2.7 m/s (10 km/h), and lightest in March, at 2.1 m/s (8 km/h). The prevailing wind is from the E.
What is the average temperature in San Ramón year round?
The average temperature in San Ramón over the whole year is 18°C. November is the hottest month, with highs of about 22°C; June is the coldest, with lows of about 12°C.