Siwāna climate — normals and trends
Siwāna (India) has a hot desert climate (BWh) under the Köppen-Geiger classification. Its mean annual temperature is 27.3 °C and it receives 300 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 (34.7 °C on average) and the coldest is January (17.5 °C). Rainfall peaks in July.
Siwāna averages 0 frost days, 268 hot days (≥ 30 °C) and 34 rainy days per year.
Siwāna has warmed by +0.9 °C between 1940 and 2025, or +0.11 °C per decade. This trend is statistically significant.
The hottest day of the period reached 48.9 °C (on 19 May 2016) and the coldest 1.5 °C (on 10 February 1950).
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
SiwānaRajasthan
- coords
- 25.65°, 72.42°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
27.3°C
Average daily high
33.6°C
Average daily low
21.5°C
Annual rainfall
300mm
Sunshine / day
10.7h
Mean relative humidity
45%
Average peak wind
18.4km/h
Seasonal range
17.2°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
268 d/yr
Rainy days (≥ 1 mm)
34 d/yr
Annual snowfall
0.0 cm
Average feels-like high
33.5 °C
Average feels-like low
21.2 °C
Average peak gust
32.6 km/h
Tropical nights (≥ 20 °C)
227 d/yr
Solar radiation
20.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+0.9 °C
since 1940
+0.1 °C per decade · r² = 0.22 · 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
48.9 °C
19 May 2016
Coldest day
1.5 °C
10 February 1950
Wettest day
201 mm
18 June 2023
Windiest day
60.2 km/h
7 June 2010
Strongest gust
99.7 km/h
7 June 2010
Hottest feels-like
50.6 °C
25 May 2024
Coldest feels-like
-3.4 °C
10 February 1950
Sunniest day
12.9 h
1 June 1958
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 | 25.9 °C | +1.1 °C | 1 mm | -3 mm |
| Feb | 30.6 °C | +2.2 °C | 0 mm | -3 mm |
| Mar | 35.7 °C | +1.6 °C | 0 mm | -2 mm |
| Apr | 42.1 °C | +3.2 °C | 2 mm | -1 mm |
| May | 40.6 °C | -0.6 °C | 12 mm | +5 mm |
| Jun | 37.6 °C | -1.9 °C | 72 mm | +48 mm |
| Jul | 32.7 °C | -2.3 °C | 131 mm | +27 mm |
| Aug | 33.7 °C | +0.9 °C | 67 mm | -31 mm |
| Sep | 33.9 °C | -0.8 °C | 50 mm | +8 mm |
| Oct | 33.7 °C | -2.0 °C | 15 mm | +8 mm |
| Nov | 31.1 °C | -0.1 °C | 8 mm | +4 mm |
| Dec | 29.3 °C | +2.8 °C | 1 mm | -1 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 Siwāna?
Siwāna has a hot desert climate (Köppen BWh). Over 1940-2025, the average annual temperature is 27.3 °C and it receives 300 mm of precipitation per year.
What is the hottest day ever recorded in Siwāna?
The hottest day measured in Siwāna between 1940 and 2025 was 19 May 2016, reaching 48.9 °C.
What is the coldest day in Siwāna?
The coldest day measured in Siwāna between 1940 and 2025 was 10 February 1950, at 1.5 °C.
Does it snow in Siwāna?
Almost never: Siwāna sees virtually no snow, with about 0 frost days per year.
Has the climate of Siwāna warmed?
Yes: Siwāna warmed by +0.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Siwāna?
The wettest day measured in Siwāna between 1940 and 2025 was 18 June 2023, with 201 mm of rain in 24 hours.
What was the windiest day in Siwāna?
The windiest day measured in Siwāna between 1940 and 2025 was 7 June 2010, with winds reaching 60.2 km/h.
What is the warmest month in Siwāna?
The warmest month in Siwāna is May (34.7 °C on average); the coldest is January (17.5 °C).
How much does it rain in Siwāna?
Siwāna receives on average 300 mm of precipitation per year, spread over about 34 rainy days.
Is it sunny in Siwāna?
Siwāna gets on average 10.7 hours of sunshine per day, roughly 3,905 hours per year over 1940-2025.
Are there tropical nights in Siwāna?
Yes: Siwāna has on average 227 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Siwāna?
In Siwāna, between 1940 and 2025, the highest apparent temperature reached 50.6 °C on 25 May 2024, and the lowest was -3.4 °C on 10 February 1950.
Compare Siwāna with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Siwāna