Amuntai climate — normals and trends
Amuntai (Indonesia) has a tropical rainforest climate (Af) under the Köppen-Geiger classification. Its mean annual temperature is 26.1 °C and it receives 2,310 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 October (26.6 °C on average) and the coldest is January (25.7 °C). Rainfall peaks in December.
Amuntai averages 0 frost days, 245 hot days (≥ 30 °C) and 288 rainy days per year.
Amuntai has warmed by +2.0 °C between 1940 and 2025, or +0.24 °C per decade. This trend is statistically significant.
The hottest day of the period reached 38.6 °C (on 15 September 2009) and the coldest 18.2 °C (on 31 July 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
AmuntaiSouth Kalimantan
- coords
- -2.42°, 115.25°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
26.1°C
Average daily high
30.8°C
Average daily low
23.0°C
Annual rainfall
2,310mm
Sunshine / day
9.0h
Mean relative humidity
87%
Average peak wind
6.7km/h
Seasonal range
0.9°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
245 d/yr
Rainy days (≥ 1 mm)
288 d/yr
Annual snowfall
0.0 cm
Average feels-like high
37.3 °C
Average feels-like low
27.7 °C
Average peak gust
22.4 km/h
Tropical nights (≥ 20 °C)
364 d/yr
Solar radiation
17.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.0 °C
since 1940
+0.2 °C per decade · r² = 0.73 · 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
38.6 °C
15 September 2009
Coldest day
18.2 °C
31 July 1967
Wettest day
181 mm
7 March 2025
Windiest day
18.1 km/h
18 December 1954
Strongest gust
70.6 km/h
10 January 2013
Hottest feels-like
44.1 °C
25 February 2020
Coldest feels-like
19.7 °C
31 July 1967
Sunniest day
12.1 h
31 January 1971
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 | 30.5 °C | +0.4 °C | 346 mm | +127 mm |
| Feb | 31.6 °C | +1.2 °C | 206 mm | -1 mm |
| Mar | 31.4 °C | +0.8 °C | 406 mm | +166 mm |
| Apr | 31.4 °C | +0.6 °C | 254 mm | +19 mm |
| May | 32.1 °C | +1.3 °C | 213 mm | +6 mm |
| Jun | 31.5 °C | +0.9 °C | 174 mm | +20 mm |
| Jul | 32.5 °C | +1.9 °C | 62 mm | -72 mm |
| Aug | 31.8 °C | +0.6 °C | 184 mm | +65 mm |
| Sep | 31.6 °C | -0.2 °C | 203 mm | +71 mm |
| Oct | 32.3 °C | +0.5 °C | 172 mm | +4 mm |
| Nov | 31.7 °C | +0.8 °C | 194 mm | -44 mm |
| Dec | 31.1 °C | +1.0 °C | 251 mm | -5 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 Amuntai?
Amuntai has a tropical rainforest climate (Köppen Af). Over 1940-2025, the average annual temperature is 26.1 °C and it receives 2,310 mm of precipitation per year.
What is the hottest day ever recorded in Amuntai?
The hottest day measured in Amuntai between 1940 and 2025 was 15 September 2009, reaching 38.6 °C.
What is the coldest day in Amuntai?
The coldest day measured in Amuntai between 1940 and 2025 was 31 July 1967, at 18.2 °C.
Does it snow in Amuntai?
Almost never: Amuntai sees virtually no snow, with about 0 frost days per year.
Has the climate of Amuntai warmed?
Yes: Amuntai warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Amuntai?
The wettest day measured in Amuntai between 1940 and 2025 was 7 March 2025, with 181 mm of rain in 24 hours.
What was the windiest day in Amuntai?
The windiest day measured in Amuntai between 1940 and 2025 was 18 December 1954, with winds reaching 18.1 km/h.
What is the warmest month in Amuntai?
The warmest month in Amuntai is October (26.6 °C on average); the coldest is January (25.7 °C).
How much does it rain in Amuntai?
Amuntai receives on average 2,310 mm of precipitation per year, spread over about 288 rainy days.
Is it sunny in Amuntai?
Amuntai gets on average 9.0 hours of sunshine per day, roughly 3,285 hours per year over 1940-2025.
Are there tropical nights in Amuntai?
Yes: Amuntai has on average 364 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Amuntai?
In Amuntai, between 1940 and 2025, the highest apparent temperature reached 44.1 °C on 25 February 2020, and the lowest was 19.7 °C on 31 July 1967.
Compare Amuntai with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Amuntai