Subulussalam climate — normals and trends
Subulussalam (Indonesia) has a tropical rainforest climate (Af) under the Köppen-Geiger classification. Its mean annual temperature is 23.9 °C and it receives 3,518 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 (24.5 °C on average) and the coldest is November (23.4 °C). Rainfall peaks in November.
Subulussalam averages 0 frost days, 119 hot days (≥ 30 °C) and 295 rainy days per year.
Subulussalam has warmed by +2.2 °C between 1940 and 2025, or +0.26 °C per decade. This trend is statistically significant.
The hottest day of the period reached 35.1 °C (on 11 March 2014) and the coldest 14.4 °C (on 23 June 1940).
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
SubulussalamSpecial Region of Aceh
- coords
- 2.66°, 97.88°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
23.9°C
Average daily high
29.1°C
Average daily low
20.0°C
Annual rainfall
3,518mm
Sunshine / day
9.0h
Mean relative humidity
87%
Average peak wind
7.2km/h
Seasonal range
1.1°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
119 d/yr
Rainy days (≥ 1 mm)
295 d/yr
Annual snowfall
0.0 cm
Average feels-like high
34.8 °C
Average feels-like low
22.9 °C
Average peak gust
24.5 km/h
Tropical nights (≥ 20 °C)
191 d/yr
Solar radiation
17.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.2 °C
since 1940
+0.3 °C per decade · r² = 0.90 · 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
35.1 °C
11 March 2014
Coldest day
14.4 °C
23 June 1940
Wettest day
193 mm
12 October 1968
Windiest day
16.7 km/h
21 January 1993
Strongest gust
56.5 km/h
31 July 1978
Hottest feels-like
42.5 °C
2 May 1998
Coldest feels-like
13.9 °C
23 June 1940
Sunniest day
12.2 h
21 June 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 | 29.3 °C | +0.2 °C | 399 mm | +93 mm |
| Feb | 30.5 °C | +0.8 °C | 239 mm | -46 mm |
| Mar | 29.8 °C | +0.2 °C | 450 mm | +91 mm |
| Apr | 29.6 °C | +0.2 °C | 373 mm | +14 mm |
| May | 30.5 °C | +0.9 °C | 142 mm | -97 mm |
| Jun | 30.7 °C | +1.0 °C | 151 mm | +22 mm |
| Jul | 30.5 °C | +1.1 °C | 145 mm | -4 mm |
| Aug | 30.0 °C | +0.9 °C | 261 mm | +62 mm |
| Sep | 29.5 °C | +0.9 °C | 156 mm | -122 mm |
| Oct | 29.7 °C | +1.5 °C | 186 mm | -217 mm |
| Nov | 27.5 °C | -0.5 °C | 551 mm | +115 mm |
| Dec | 28.6 °C | +0.2 °C | 386 mm | +10 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 Subulussalam?
Subulussalam has a tropical rainforest climate (Köppen Af). Over 1940-2025, the average annual temperature is 23.9 °C and it receives 3,518 mm of precipitation per year.
What is the hottest day ever recorded in Subulussalam?
The hottest day measured in Subulussalam between 1940 and 2025 was 11 March 2014, reaching 35.1 °C.
What is the coldest day in Subulussalam?
The coldest day measured in Subulussalam between 1940 and 2025 was 23 June 1940, at 14.4 °C.
Does it snow in Subulussalam?
Almost never: Subulussalam sees virtually no snow, with about 0 frost days per year.
Has the climate of Subulussalam warmed?
Yes: Subulussalam warmed by +2.2 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Subulussalam?
The wettest day measured in Subulussalam between 1940 and 2025 was 12 October 1968, with 193 mm of rain in 24 hours.
What was the windiest day in Subulussalam?
The windiest day measured in Subulussalam between 1940 and 2025 was 21 January 1993, with winds reaching 16.7 km/h.
What is the warmest month in Subulussalam?
The warmest month in Subulussalam is May (24.5 °C on average); the coldest is November (23.4 °C).
How much does it rain in Subulussalam?
Subulussalam receives on average 3,518 mm of precipitation per year, spread over about 295 rainy days.
Is it sunny in Subulussalam?
Subulussalam gets on average 9.0 hours of sunshine per day, roughly 3,285 hours per year over 1940-2025.
Are there tropical nights in Subulussalam?
Yes: Subulussalam has on average 191 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Subulussalam?
In Subulussalam, between 1940 and 2025, the highest apparent temperature reached 42.5 °C on 2 May 1998, and the lowest was 13.9 °C on 23 June 1940.
Compare Subulussalam with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Subulussalam