Annual mean 20°C · wettest around December · prevailing wind W
Warmest
25.5 °C
Coldest
19.3 °C
Wettest
66%
Windiest
4.0 m/s
Prevailing
W
3.6 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 Santiago over the whole year is 20°C. March is the hottest month, with highs of about 25°C; August is the coldest, with lows of about 13°C. The rainy (wet) season in Santiago runs from December to April, peaking in December with a 41% chance of rain on a given day. The dry season is May to September; August is the driest month, at 5%. Winds in Santiago are highest in January, averaging 3.6 m/s (13 km/h), and lightest in June, at 2.6 m/s (9 km/h). The prevailing wind is from the W. The clearest skies in Santiago come in April, when the sky is typically 26% covered; June is the cloudiest month, at 57%.
Month by month Santiago 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
25°C
19°C
24°C
32%
45%
3.6 m/s
61
47
33
February
25°C
20°C
25°C
35%
49%
3.6 m/s
51
56
24
March
25°C
19°C
25°C
31%
38%
3.6 m/s
55
57
25
April
24°C
17°C
24°C
37%
26%
3.4 m/s
66
41
40
May
22°C
15°C
21°C
21%
38%
2.8 m/s
78
21
63
June
20°C
14°C
19°C
13%
57%
2.6 m/s
82
9
76
July
20°C
13°C
18°C
18%
56%
2.7 m/s
80
5
80
August
20°C
13°C
18°C
5%
51%
2.9 m/s
79
8
77
September
21°C
14°C
19°C
14%
45%
3.3 m/s
78
14
71
October
22°C
15°C
20°C
27%
39%
3.5 m/s
77
21
66
November
23°C
16°C
21°C
19%
40%
3.5 m/s
77
23
61
December
24°C
17°C
23°C
41%
40%
3.6 m/s
70
31
48
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 Santiago weather by season
Year round, Santiago has days of about 20°C at their warmest in July, its coolest month, and 25°C in March, its warmest; the coolest hours of the day run from 13°C to 20°C through the year, and the average temperature over the year is 20°C around the clock. Rain is most likely around December 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.
Santiago weather in winterJune to August
High 20°CLow 13°CRain 12%
Winter in Santiago has typical daily highs of about 20°C and lows of about 13°C, with a 12% chance of rain on a given day.
Santiago weather in springSeptember to November
High 22°CLow 15°CRain 20%
Spring in Santiago has typical daily highs of about 22°C and lows of about 15°C, with a 20% chance of rain on a given day.
Santiago weather in summerDecember to February
High 24°CLow 18°CRain 36%
Summer in Santiago has typical daily highs of about 24°C and lows of about 18°C, with a 36% chance of rain on a given day.
Santiago weather in autumnMarch to May
High 24°CLow 17°CRain 30%
Autumn in Santiago has typical daily highs of about 24°C and lows of about 17°C, with a 30% chance of rain on a given day.
When is the rainy season in Santiago?
The rainy (wet) season in Santiago runs from December to April, peaking in December with a 41% chance of rain on a given day. The dry season is May to September; August is the driest month, at 5%.
What time of year is Santiago windiest?
Winds in Santiago are highest in January, averaging 3.6 m/s (13 km/h), and lightest in June, at 2.6 m/s (9 km/h). The prevailing wind is from the W.
What is the average temperature in Santiago year round?
The average temperature in Santiago over the whole year is 20°C. March is the hottest month, with highs of about 25°C; August is the coldest, with lows of about 13°C.