Annual mean 18°C · wettest around January · prevailing wind SW
Warmest
29.7 °C
Coldest
16.7 °C
Wettest
20%
Windiest
4.1 m/s
Prevailing
SW
3.4 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 Rancho Santa Margarita over the whole year is 18°C. August is the hottest month, with highs of about 29°C; January is the coldest, with lows of about 9°C. Rancho Santa Margarita has no sharply defined rainy season: the chance of rain on a given day runs from 3% in July, the driest month, to 17% in January, the wettest. Winds in Rancho Santa Margarita are highest in May, averaging 2.6 m/s (9 km/h), and lightest in December, at 1.8 m/s (6 km/h). The prevailing wind is from the SW. The clearest skies in Rancho Santa Margarita come in November, when the sky is typically 24% covered; May is the cloudiest month, at 52%.
Month by month Rancho Santa Margarita 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
18°C
9°C
15°C
17%
33%
2.0 m/s
53
1
88
February
18°C
9°C
15°C
17%
33%
2.2 m/s
55
4
83
March
18°C
10°C
15°C
17%
42%
2.4 m/s
56
4
85
April
21°C
12°C
18°C
9%
40%
2.5 m/s
76
11
81
May
22°C
15°C
19°C
7%
52%
2.6 m/s
84
12
79
June
25°C
17°C
23°C
3%
45%
2.6 m/s
78
32
56
July
28°C
19°C
27°C
3%
32%
2.6 m/s
57
56
27
August
29°C
19°C
28°C
5%
29%
2.4 m/s
52
63
19
September
28°C
18°C
26°C
5%
33%
2.2 m/s
63
50
31
October
26°C
15°C
23°C
9%
28%
2.0 m/s
78
35
52
November
22°C
11°C
19°C
11%
24%
1.9 m/s
82
12
76
December
18°C
9°C
16°C
16%
31%
1.8 m/s
63
1
88
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 Rancho Santa Margarita weather by season
Year round, Rancho Santa Margarita has days of about 18°C at their warmest in January, its coolest month, and 29°C in August, its warmest; the coolest hours of the day run from 9°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 January and least likely around July. 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.
Rancho Santa Margarita weather in winterDecember to February
High 18°CLow 9°CRain 17%
Winter in Rancho Santa Margarita has typical daily highs of about 18°C and lows of about 9°C, with a 17% chance of rain on a given day.
Rancho Santa Margarita weather in springMarch to May
High 20°CLow 12°CRain 11%
Spring in Rancho Santa Margarita has typical daily highs of about 20°C and lows of about 12°C, with a 11% chance of rain on a given day.
Rancho Santa Margarita weather in summerJune to August
High 27°CLow 19°CRain 4%
Summer in Rancho Santa Margarita has typical daily highs of about 27°C and lows of about 19°C, with a 4% chance of rain on a given day.
Rancho Santa Margarita weather in autumnSeptember to November
High 25°CLow 15°CRain 9%
Autumn in Rancho Santa Margarita has typical daily highs of about 25°C and lows of about 15°C, with a 9% chance of rain on a given day.
When is the rainy season in Rancho Santa Margarita?
Rancho Santa Margarita has no sharply defined rainy season: the chance of rain on a given day runs from 3% in July, the driest month, to 17% in January, the wettest.
What time of year is Rancho Santa Margarita windiest?
Winds in Rancho Santa Margarita are highest in May, averaging 2.6 m/s (9 km/h), and lightest in December, at 1.8 m/s (6 km/h). The prevailing wind is from the SW.
What is the average temperature in Rancho Santa Margarita year round?
The average temperature in Rancho Santa Margarita over the whole year is 18°C. August is the hottest month, with highs of about 29°C; January is the coldest, with lows of about 9°C.