Sumbawa Besar climate — normals and trends
Sumbawa Besar (Indonesia) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 25.7 °C and it receives 1,416 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 November (27.0 °C on average) and the coldest is July (24.7 °C). Rainfall peaks in January.
Sumbawa Besar averages 0 frost days, 140 hot days (≥ 30 °C) and 165 rainy days per year.
Sumbawa Besar 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 35.1 °C (on 28 October 2024) and the coldest 18.1 °C (on 20 July 1991).
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
Sumbawa BesarWest Nusa Tenggara
- coords
- -8.49°, 117.42°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
25.7°C
Average daily high
29.5°C
Average daily low
23.0°C
Annual rainfall
1,416mm
Sunshine / day
10.7h
Mean relative humidity
80%
Average peak wind
11.5km/h
Seasonal range
2.3°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
140 d/yr
Rainy days (≥ 1 mm)
165 d/yr
Annual snowfall
0.0 cm
Average feels-like high
34.2 °C
Average feels-like low
26.6 °C
Average peak gust
29.5 km/h
Tropical nights (≥ 20 °C)
362 d/yr
Solar radiation
19.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.8 °C
since 1940
+0.2 °C per decade · r² = 0.80 · 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
28 October 2024
Coldest day
18.1 °C
20 July 1991
Wettest day
158 mm
10 February 2017
Windiest day
35.9 km/h
19 January 1952
Strongest gust
79.6 km/h
15 March 2012
Hottest feels-like
40.9 °C
30 December 2023
Coldest feels-like
19.0 °C
20 July 1991
Sunniest day
12.5 h
12 January 1948
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 | 28.5 °C | +0.3 °C | 603 mm | +284 mm |
| Feb | 28.8 °C | +0.9 °C | 285 mm | -26 mm |
| Mar | 29.5 °C | +1.0 °C | 291 mm | +48 mm |
| Apr | 30.2 °C | +0.9 °C | 69 mm | -20 mm |
| May | 30.0 °C | +0.5 °C | 126 mm | +83 mm |
| Jun | 30.0 °C | +0.9 °C | 19 mm | -5 mm |
| Jul | 30.1 °C | +1.3 °C | 6 mm | -5 mm |
| Aug | 31.1 °C | +1.6 °C | 2 mm | -3 mm |
| Sep | 31.4 °C | +0.7 °C | 27 mm | +18 mm |
| Oct | 32.1 °C | +0.5 °C | 64 mm | +38 mm |
| Nov | 30.4 °C | -0.8 °C | 235 mm | +140 mm |
| Dec | 29.6 °C | +0.3 °C | 361 mm | +120 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 Sumbawa Besar?
Sumbawa Besar has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 25.7 °C and it receives 1,416 mm of precipitation per year.
What is the hottest day ever recorded in Sumbawa Besar?
The hottest day measured in Sumbawa Besar between 1940 and 2025 was 28 October 2024, reaching 35.1 °C.
What is the coldest day in Sumbawa Besar?
The coldest day measured in Sumbawa Besar between 1940 and 2025 was 20 July 1991, at 18.1 °C.
Does it snow in Sumbawa Besar?
Almost never: Sumbawa Besar sees virtually no snow, with about 0 frost days per year.
Has the climate of Sumbawa Besar warmed?
Yes: Sumbawa Besar warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Sumbawa Besar?
The wettest day measured in Sumbawa Besar between 1940 and 2025 was 10 February 2017, with 158 mm of rain in 24 hours.
What was the windiest day in Sumbawa Besar?
The windiest day measured in Sumbawa Besar between 1940 and 2025 was 19 January 1952, with winds reaching 35.9 km/h.
What is the warmest month in Sumbawa Besar?
The warmest month in Sumbawa Besar is November (27.0 °C on average); the coldest is July (24.7 °C).
How much does it rain in Sumbawa Besar?
Sumbawa Besar receives on average 1,416 mm of precipitation per year, spread over about 165 rainy days.
Is it sunny in Sumbawa Besar?
Sumbawa Besar gets on average 10.7 hours of sunshine per day, roughly 3,905 hours per year over 1940-2025.
Are there tropical nights in Sumbawa Besar?
Yes: Sumbawa Besar has on average 362 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Sumbawa Besar?
In Sumbawa Besar, between 1940 and 2025, the highest apparent temperature reached 40.9 °C on 30 December 2023, and the lowest was 19.0 °C on 20 July 1991.
Compare Sumbawa Besar with another city
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Nearby cities
The climate around Sumbawa Besar