Siwāni climate — normals and trends
Siwāni (India) has a hot semi-arid climate (BSh) under the Köppen-Geiger classification. Its mean annual temperature is 25.7 °C and it receives 443 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 June (35.2 °C on average) and the coldest is January (13.6 °C). Rainfall peaks in July.
Siwāni averages 0 frost days, 235 hot days (≥ 30 °C) and 61 rainy days per year.
No statistically significant temperature trend emerges for Siwāni between 1940 and 2025: over this span, year-to-year swings outweigh the climate signal.
The hottest day of the period reached 48.6 °C (on 26 May 1998) and the coldest 0.1 °C (on 11 January 1945).
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
SiwāniHaryana
- coords
- 28.91°, 75.61°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
25.7°C
Average daily high
32.1°C
Average daily low
20.1°C
Annual rainfall
443mm
Sunshine / day
10.8h
Mean relative humidity
52%
Average peak wind
16.3km/h
Seasonal range
21.6°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
235 d/yr
Rainy days (≥ 1 mm)
61 d/yr
Annual snowfall
0.0 cm
Average feels-like high
32.5 °C
Average feels-like low
20.3 °C
Average peak gust
29.9 km/h
Tropical nights (≥ 20 °C)
200 d/yr
Solar radiation
19.6 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
No clear trend over this period
Over a short window, year-to-year swings outweigh the climate signal. Try 86 years.
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
48.6 °C
26 May 1998
Coldest day
0.1 °C
11 January 1945
Wettest day
115 mm
4 September 1995
Windiest day
44.0 km/h
20 April 2018
Strongest gust
72.4 km/h
20 April 2018
Hottest feels-like
49.4 °C
12 June 2025
Coldest feels-like
-3.9 °C
24 December 1945
Sunniest day
13.7 h
10 June 1957
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 | 19.6 °C | -0.7 °C | 32 mm | +15 mm |
| Feb | 25.7 °C | +1.3 °C | 10 mm | -6 mm |
| Mar | 31.9 °C | +1.3 °C | 2 mm | -10 mm |
| Apr | 40.0 °C | +2.8 °C | 6 mm | -0 mm |
| May | 39.8 °C | -1.3 °C | 19 mm | +5 mm |
| Jun | 38.2 °C | -2.5 °C | 113 mm | +74 mm |
| Jul | 33.8 °C | -2.3 °C | 211 mm | +80 mm |
| Aug | 33.6 °C | -0.7 °C | 211 mm | +88 mm |
| Sep | 35.0 °C | -0.1 °C | 86 mm | +27 mm |
| Oct | 32.8 °C | -1.1 °C | 17 mm | +4 mm |
| Nov | 28.2 °C | -0.2 °C | 0 mm | -5 mm |
| Dec | 23.5 °C | +0.9 °C | 0 mm | -8 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 Siwāni?
Siwāni has a hot semi-arid climate (Köppen BSh). Over 1940-2025, the average annual temperature is 25.7 °C and it receives 443 mm of precipitation per year.
What is the hottest day ever recorded in Siwāni?
The hottest day measured in Siwāni between 1940 and 2025 was 26 May 1998, reaching 48.6 °C.
What is the coldest day in Siwāni?
The coldest day measured in Siwāni between 1940 and 2025 was 11 January 1945, at 0.1 °C.
Does it snow in Siwāni?
Almost never: Siwāni sees virtually no snow, with about 0 frost days per year.
Has the climate of Siwāni warmed?
Between 1940 and 2025, no statistically significant temperature trend emerges in Siwāni.
What is the wettest day in Siwāni?
The wettest day measured in Siwāni between 1940 and 2025 was 4 September 1995, with 115 mm of rain in 24 hours.
What was the windiest day in Siwāni?
The windiest day measured in Siwāni between 1940 and 2025 was 20 April 2018, with winds reaching 44.0 km/h.
What is the warmest month in Siwāni?
The warmest month in Siwāni is June (35.2 °C on average); the coldest is January (13.6 °C).
How much does it rain in Siwāni?
Siwāni receives on average 443 mm of precipitation per year, spread over about 61 rainy days.
Is it sunny in Siwāni?
Siwāni gets on average 10.8 hours of sunshine per day, roughly 3,942 hours per year over 1940-2025.
Are there tropical nights in Siwāni?
Yes: Siwāni has on average 200 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Siwāni?
In Siwāni, between 1940 and 2025, the highest apparent temperature reached 49.4 °C on 12 June 2025, and the lowest was -3.9 °C on 24 December 1945.
Compare Siwāni with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Siwāni