Annual mean 18°C · wettest around March · prevailing wind W
Warmest
32.7 °C
Coldest
16.2 °C
Wettest
53%
Windiest
3.6 m/s
Prevailing
W
2.9 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 San Jacinto over the whole year is 18°C. August is the hottest month, with highs of about 32°C; January is the coldest, with lows of about 7°C. San Jacinto has no sharply defined rainy season: the chance of rain on a given day runs from 24% in June, the driest month, to 47% in March, the wettest. Winds in San Jacinto are highest in May, averaging 2.6 m/s (9 km/h), and lightest in December, at 1.7 m/s (6 km/h). The prevailing wind is from the W. The clearest skies in San Jacinto come in August, when the sky is typically 15% covered; May is the cloudiest month, at 31%.
Month by month San Jacinto 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
17°C
7°C
13°C
47%
24%
1.9 m/s
43
1
79
February
17°C
7°C
14°C
42%
24%
2.1 m/s
47
3
74
March
18°C
8°C
15°C
47%
31%
2.3 m/s
48
5
74
April
22°C
11°C
19°C
36%
26%
2.4 m/s
66
18
67
May
23°C
13°C
21°C
30%
31%
2.6 m/s
71
24
62
June
28°C
17°C
26°C
24%
23%
2.6 m/s
55
45
34
July
32°C
19°C
30°C
24%
15%
2.5 m/s
30
55
13
August
32°C
19°C
30°C
29%
15%
2.3 m/s
27
55
11
September
30°C
17°C
28°C
29%
20%
2.1 m/s
44
50
22
October
27°C
14°C
24°C
37%
18%
2.0 m/s
63
40
43
November
22°C
9°C
18°C
38%
16%
1.8 m/s
69
15
69
December
18°C
7°C
14°C
46%
22%
1.7 m/s
52
1
80
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 Jacinto weather by season
Year round, San Jacinto has days of about 17°C at their warmest in January, its coolest month, and 32°C in August, its warmest; the coolest hours of the day run from 7°C to 19°C through the year, and the average temperature over the year is 18°C around the clock. Rain is most likely around March and least likely around June. 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 Jacinto weather in winterDecember to February
High 17°CLow 7°CRain 45%
Winter in San Jacinto has typical daily highs of about 17°C and lows of about 7°C, with a 45% chance of rain on a given day.
San Jacinto weather in springMarch to May
High 21°CLow 11°CRain 38%
Spring in San Jacinto has typical daily highs of about 21°C and lows of about 11°C, with a 38% chance of rain on a given day.
San Jacinto weather in summerJune to August
High 31°CLow 18°CRain 26%
Summer in San Jacinto has typical daily highs of about 31°C and lows of about 18°C, with a 26% chance of rain on a given day.
San Jacinto weather in autumnSeptember to November
High 26°CLow 13°CRain 35%
Autumn in San Jacinto has typical daily highs of about 26°C and lows of about 13°C, with a 35% chance of rain on a given day.
When is the rainy season in San Jacinto?
San Jacinto has no sharply defined rainy season: the chance of rain on a given day runs from 24% in June, the driest month, to 47% in March, the wettest.
What time of year is San Jacinto windiest?
Winds in San Jacinto are highest in May, averaging 2.6 m/s (9 km/h), and lightest in December, at 1.7 m/s (6 km/h). The prevailing wind is from the W.
What is the average temperature in San Jacinto year round?
The average temperature in San Jacinto over the whole year is 18°C. August is the hottest month, with highs of about 32°C; January is the coldest, with lows of about 7°C.