Colon climate — normals and trends
Colon (Argentina) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 16.9 °C and it receives 952 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is January (23.9 °C on average) and the coldest is July (9.8 °C). Rainfall peaks in March.
Colon averages 8 frost days, 49 hot days (≥ 30 °C) and 91 rainy days per year.
No statistically significant temperature trend emerges for Colon between 1940 and 2025: over this span, year-to-year swings outweigh the climate signal.
The hottest day of the period reached 41.3 °C (on 29 December 1971) and the coldest -7.5 °C (on 14 June 1967).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
ColonBuenos Aires
- coords
- -33.90°, -61.10°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
16.9°C
Average daily high
22.6°C
Average daily low
11.8°C
Annual rainfall
952mm
Sunshine / day
9.6h
Mean relative humidity
71%
Average peak wind
18.4km/h
Seasonal range
14.1°C
Frost days (< 0 °C)
8 d/yr
Hot days (≥ 30 °C)
49 d/yr
Rainy days (≥ 1 mm)
91 d/yr
Annual snowfall
0.1 cm
Average feels-like high
22.2 °C
Average feels-like low
10.1 °C
Average peak gust
35.0 km/h
Tropical nights (≥ 20 °C)
25 d/yr
Solar radiation
17.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
No clear trend over this period
Over a short window, year-to-year swings outweigh the climate signal. Try 86 years.
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
41.3 °C
29 December 1971
Coldest day
-7.5 °C
14 June 1967
Wettest day
139 mm
31 January 1981
Windiest day
54.0 km/h
29 May 1984
Strongest gust
92.5 km/h
25 October 1989
Hottest feels-like
44.0 °C
12 December 1994
Coldest feels-like
-11.8 °C
14 June 1967
Snowiest day
2.5 cm
6 July 1960
Sunniest day
14.0 h
4 December 1940
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 31.6 °C | +1.9 °C | 39 mm | -65 mm |
| Feb | 30.4 °C | +2.0 °C | 110 mm | +8 mm |
| Mar | 26.4 °C | +0.1 °C | 155 mm | +42 mm |
| Apr | 22.2 °C | -0.5 °C | 54 mm | -33 mm |
| May | 20.3 °C | +1.4 °C | 115 mm | +55 mm |
| Jun | 15.5 °C | -0.1 °C | 3 mm | -35 mm |
| Jul | 16.2 °C | +1.0 °C | 47 mm | +6 mm |
| Aug | 18.0 °C | +0.7 °C | 137 mm | +92 mm |
| Sep | 20.4 °C | +0.8 °C | 83 mm | +17 mm |
| Oct | 24.0 °C | +1.6 °C | 91 mm | -16 mm |
| Nov | 25.5 °C | -0.4 °C | 107 mm | +8 mm |
| Dec | 30.5 °C | +1.8 °C | 53 mm | -39 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Colon?
Colon has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 16.9 °C and it receives 952 mm of precipitation per year.
What is the hottest day ever recorded in Colon?
The hottest day measured in Colon between 1940 and 2025 was 29 December 1971, reaching 41.3 °C.
What is the coldest day in Colon?
The coldest day measured in Colon between 1940 and 2025 was 14 June 1967, at -7.5 °C.
Does it snow in Colon?
Almost never: Colon sees virtually no snow, with about 8 frost days per year.
Has the climate of Colon warmed?
Between 1940 and 2025, no statistically significant temperature trend emerges in Colon.
What is the wettest day in Colon?
The wettest day measured in Colon between 1940 and 2025 was 31 January 1981, with 139 mm of rain in 24 hours.
What was the windiest day in Colon?
The windiest day measured in Colon between 1940 and 2025 was 29 May 1984, with winds reaching 54.0 km/h.
What is the warmest month in Colon?
The warmest month in Colon is January (23.9 °C on average); the coldest is July (9.8 °C).
How much does it rain in Colon?
Colon receives on average 952 mm of precipitation per year, spread over about 91 rainy days.
Is it sunny in Colon?
Colon gets on average 9.6 hours of sunshine per day, roughly 3,504 hours per year over 1940-2025.
What is the biggest single-day snowfall in Colon?
The heaviest 24-hour snowfall measured in Colon between 1940 and 2025 was 6 July 1960, with 2.5 cm.
Are there tropical nights in Colon?
Yes: Colon has on average 25 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Colon?
In Colon, between 1940 and 2025, the highest apparent temperature reached 44.0 °C on 12 December 1994, and the lowest was -11.8 °C on 14 June 1967.
Compare Colon with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Colon