Sintang climate — normals and trends
Sintang (Indonesia) has a tropical rainforest climate (Af) under the Köppen-Geiger classification. Its mean annual temperature is 26.2 °C and it receives 2,775 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 May (26.7 °C on average) and the coldest is January (25.8 °C). Rainfall peaks in October.
Sintang averages 0 frost days, 263 hot days (≥ 30 °C) and 294 rainy days per year.
Sintang has warmed by +1.8 °C between 1940 and 2025, or +0.21 °C per decade. This trend is statistically significant.
The hottest day of the period reached 36.6 °C (on 21 September 2024) and the coldest 18.7 °C (on 19 January 1965).
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
SintangWest Kalimantan
- coords
- 0.07°, 111.50°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
26.2°C
Average daily high
30.9°C
Average daily low
23.3°C
Annual rainfall
2,775mm
Sunshine / day
9.1h
Mean relative humidity
87%
Average peak wind
7.1km/h
Seasonal range
0.9°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
263 d/yr
Rainy days (≥ 1 mm)
294 d/yr
Annual snowfall
0.0 cm
Average feels-like high
37.4 °C
Average feels-like low
28.2 °C
Average peak gust
22.0 km/h
Tropical nights (≥ 20 °C)
365 d/yr
Solar radiation
17.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.8 °C
since 1940
+0.2 °C per decade · r² = 0.87 · 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
36.6 °C
21 September 2024
Coldest day
18.7 °C
19 January 1965
Wettest day
166 mm
28 October 2021
Windiest day
18.2 km/h
9 July 1940
Strongest gust
56.9 km/h
11 January 2003
Hottest feels-like
44.3 °C
4 October 2023
Coldest feels-like
20.7 °C
17 August 1940
Sunniest day
11.9 h
27 April 1949
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 | 30.8 °C | +0.6 °C | 353 mm | +111 mm |
| Feb | 31.3 °C | +0.7 °C | 170 mm | -45 mm |
| Mar | 31.5 °C | +0.5 °C | 405 mm | +148 mm |
| Apr | 31.6 °C | +0.5 °C | 348 mm | +91 mm |
| May | 32.6 °C | +1.4 °C | 178 mm | -49 mm |
| Jun | 31.9 °C | +0.9 °C | 165 mm | +0 mm |
| Jul | 32.7 °C | +1.7 °C | 96 mm | -50 mm |
| Aug | 30.8 °C | -0.4 °C | 248 mm | +72 mm |
| Sep | 31.8 °C | +0.7 °C | 384 mm | +142 mm |
| Oct | 32.2 °C | +1.1 °C | 203 mm | -98 mm |
| Nov | 32.9 °C | +2.1 °C | 157 mm | -132 mm |
| Dec | 31.8 °C | +1.3 °C | 275 mm | +16 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 Sintang?
Sintang has a tropical rainforest climate (Köppen Af). Over 1940-2025, the average annual temperature is 26.2 °C and it receives 2,775 mm of precipitation per year.
What is the hottest day ever recorded in Sintang?
The hottest day measured in Sintang between 1940 and 2025 was 21 September 2024, reaching 36.6 °C.
What is the coldest day in Sintang?
The coldest day measured in Sintang between 1940 and 2025 was 19 January 1965, at 18.7 °C.
Does it snow in Sintang?
Almost never: Sintang sees virtually no snow, with about 0 frost days per year.
Has the climate of Sintang warmed?
Yes: Sintang warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Sintang?
The wettest day measured in Sintang between 1940 and 2025 was 28 October 2021, with 166 mm of rain in 24 hours.
What was the windiest day in Sintang?
The windiest day measured in Sintang between 1940 and 2025 was 9 July 1940, with winds reaching 18.2 km/h.
What is the warmest month in Sintang?
The warmest month in Sintang is May (26.7 °C on average); the coldest is January (25.8 °C).
How much does it rain in Sintang?
Sintang receives on average 2,775 mm of precipitation per year, spread over about 294 rainy days.
Is it sunny in Sintang?
Sintang gets on average 9.1 hours of sunshine per day, roughly 3,322 hours per year over 1940-2025.
Are there tropical nights in Sintang?
Yes: Sintang has on average 365 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Sintang?
In Sintang, between 1940 and 2025, the highest apparent temperature reached 44.3 °C on 4 October 2023, and the lowest was 20.7 °C on 17 August 1940.
Compare Sintang with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Sintang