Utan climate — normals and trends
Utan (Indonesia) has a tropical monsoon climate (Am) under the Köppen-Geiger classification. Its mean annual temperature is 26.5 °C and it receives 2,080 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 (27.1 °C on average) and the coldest is January (25.9 °C). Rainfall peaks in January.
Utan averages 0 frost days, 240 hot days (≥ 30 °C) and 262 rainy days per year.
Utan has warmed by +1.5 °C between 1940 and 2025, or +0.18 °C per decade. This trend is statistically significant.
The hottest day of the period reached 35.8 °C (on 17 October 2023) and the coldest 18.4 °C (on 20 June 1941).
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
UtanJakarta Special Capital Region
- coords
- -6.18°, 106.95°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
26.5°C
Average daily high
30.4°C
Average daily low
23.5°C
Annual rainfall
2,080mm
Sunshine / day
10.5h
Mean relative humidity
82%
Average peak wind
12.2km/h
Seasonal range
1.2°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
240 d/yr
Rainy days (≥ 1 mm)
262 d/yr
Annual snowfall
0.0 cm
Average feels-like high
35.9 °C
Average feels-like low
27.7 °C
Average peak gust
26.6 km/h
Tropical nights (≥ 20 °C)
365 d/yr
Solar radiation
19.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.5 °C
since 1940
+0.2 °C per decade · r² = 0.74 · 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
35.8 °C
17 October 2023
Coldest day
18.4 °C
20 June 1941
Wettest day
159 mm
25 January 2020
Windiest day
28.9 km/h
30 November 2017
Strongest gust
66.2 km/h
10 February 2001
Hottest feels-like
41.6 °C
21 October 2017
Coldest feels-like
19.6 °C
6 July 2001
Sunniest day
12.3 h
18 November 1951
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 | 30.2 °C | +1.1 °C | 405 mm | +98 mm |
| Feb | 30.2 °C | +1.0 °C | 234 mm | -51 mm |
| Mar | 30.6 °C | +0.6 °C | 334 mm | +81 mm |
| Apr | 30.7 °C | +0.2 °C | 238 mm | +36 mm |
| May | 31.3 °C | +0.7 °C | 198 mm | +62 mm |
| Jun | 30.8 °C | +0.2 °C | 157 mm | +72 mm |
| Jul | 30.9 °C | +0.3 °C | 45 mm | -22 mm |
| Aug | 30.9 °C | -0.1 °C | 110 mm | +56 mm |
| Sep | 31.7 °C | +0.3 °C | 134 mm | +59 mm |
| Oct | 31.9 °C | +0.4 °C | 211 mm | +62 mm |
| Nov | 31.3 °C | +0.6 °C | 205 mm | -11 mm |
| Dec | 30.8 °C | +0.9 °C | 258 mm | +4 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 Utan?
Utan has a tropical monsoon climate (Köppen Am). Over 1940-2025, the average annual temperature is 26.5 °C and it receives 2,080 mm of precipitation per year.
What is the hottest day ever recorded in Utan?
The hottest day measured in Utan between 1940 and 2025 was 17 October 2023, reaching 35.8 °C.
What is the coldest day in Utan?
The coldest day measured in Utan between 1940 and 2025 was 20 June 1941, at 18.4 °C.
Does it snow in Utan?
Almost never: Utan sees virtually no snow, with about 0 frost days per year.
Has the climate of Utan warmed?
Yes: Utan warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Utan?
The wettest day measured in Utan between 1940 and 2025 was 25 January 2020, with 159 mm of rain in 24 hours.
What was the windiest day in Utan?
The windiest day measured in Utan between 1940 and 2025 was 30 November 2017, with winds reaching 28.9 km/h.
What is the warmest month in Utan?
The warmest month in Utan is October (27.1 °C on average); the coldest is January (25.9 °C).
How much does it rain in Utan?
Utan receives on average 2,080 mm of precipitation per year, spread over about 262 rainy days.
Is it sunny in Utan?
Utan gets on average 10.5 hours of sunshine per day, roughly 3,833 hours per year over 1940-2025.
Are there tropical nights in Utan?
Yes: Utan has on average 365 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Utan?
In Utan, between 1940 and 2025, the highest apparent temperature reached 41.6 °C on 21 October 2017, and the lowest was 19.6 °C on 6 July 2001.
Compare Utan with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Utan