Ca Mau climate — normals and trends
Ca Mau (Vietnam) has a tropical monsoon climate (Am) under the Köppen-Geiger classification. Its mean annual temperature is 26.9 °C and it receives 2,409 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 April (28.4 °C on average) and the coldest is December (25.7 °C). Rainfall peaks in October.
Ca Mau averages 0 frost days, 264 hot days (≥ 30 °C) and 248 rainy days per year.
Ca Mau has warmed by +1.7 °C between 1940 and 2025, or +0.20 °C per decade. This trend is statistically significant.
The hottest day of the period reached 37.6 °C (on 17 May 2015) and the coldest 16.5 °C (on 16 January 1963).
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
Ca MauCa Mau
- coords
- 9.18°, 105.15°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
26.9°C
Average daily high
31.0°C
Average daily low
24.2°C
Annual rainfall
2,409mm
Sunshine / day
9.9h
Mean relative humidity
81%
Average peak wind
15.5km/h
Seasonal range
2.7°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
264 d/yr
Rainy days (≥ 1 mm)
248 d/yr
Annual snowfall
0.0 cm
Average feels-like high
35.7 °C
Average feels-like low
28.5 °C
Average peak gust
35.9 km/h
Tropical nights (≥ 20 °C)
361 d/yr
Solar radiation
17.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.7 °C
since 1940
+0.2 °C per decade · r² = 0.77 · p = < 0.001
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
37.6 °C
17 May 2015
Coldest day
16.5 °C
16 January 1963
Wettest day
114 mm
24 October 1999
Windiest day
33.2 km/h
3 December 1972
Strongest gust
73.4 km/h
21 February 1947
Hottest feels-like
45.0 °C
29 April 2024
Coldest feels-like
15.0 °C
16 January 1963
Sunniest day
12.0 h
9 July 1951
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 29.9 °C | -0.3 °C | 29 mm | -2 mm |
| Feb | 31.8 °C | +0.3 °C | 35 mm | +12 mm |
| Mar | 32.8 °C | +0.2 °C | 39 mm | -19 mm |
| Apr | 32.7 °C | -0.4 °C | 208 mm | +78 mm |
| May | 32.5 °C | +0.3 °C | 395 mm | +132 mm |
| Jun | 31.5 °C | +0.3 °C | 214 mm | -59 mm |
| Jul | 31.6 °C | +1.1 °C | 157 mm | -139 mm |
| Aug | 31.4 °C | +1.0 °C | 246 mm | -51 mm |
| Sep | 30.7 °C | +0.5 °C | 294 mm | -50 mm |
| Oct | 30.9 °C | +0.7 °C | 494 mm | +105 mm |
| Nov | 30.1 °C | +0.2 °C | 245 mm | +31 mm |
| Dec | 30.6 °C | +1.1 °C | 104 mm | +14 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 Ca Mau?
Ca Mau has a tropical monsoon climate (Köppen Am). Over 1940-2025, the average annual temperature is 26.9 °C and it receives 2,409 mm of precipitation per year.
What is the hottest day ever recorded in Ca Mau?
The hottest day measured in Ca Mau between 1940 and 2025 was 17 May 2015, reaching 37.6 °C.
What is the coldest day in Ca Mau?
The coldest day measured in Ca Mau between 1940 and 2025 was 16 January 1963, at 16.5 °C.
Does it snow in Ca Mau?
Almost never: Ca Mau sees virtually no snow, with about 0 frost days per year.
Has the climate of Ca Mau warmed?
Yes: Ca Mau warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Ca Mau?
The wettest day measured in Ca Mau between 1940 and 2025 was 24 October 1999, with 114 mm of rain in 24 hours.
What was the windiest day in Ca Mau?
The windiest day measured in Ca Mau between 1940 and 2025 was 3 December 1972, with winds reaching 33.2 km/h.
What is the warmest month in Ca Mau?
The warmest month in Ca Mau is April (28.4 °C on average); the coldest is December (25.7 °C).
How much does it rain in Ca Mau?
Ca Mau receives on average 2,409 mm of precipitation per year, spread over about 248 rainy days.
Is it sunny in Ca Mau?
Ca Mau gets on average 9.9 hours of sunshine per day, roughly 3,614 hours per year over 1940-2025.
Are there tropical nights in Ca Mau?
Yes: Ca Mau has on average 361 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Ca Mau?
In Ca Mau, between 1940 and 2025, the highest apparent temperature reached 45.0 °C on 29 April 2024, and the lowest was 15.0 °C on 16 January 1963.
Compare Ca Mau with another city
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Nearby cities
The climate around Ca Mau