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Tiruchirappalli, India climate

Aw Tropical savanna (dry winter)

Tiruchirappalli has a mildly seasonal tropical climate (Tropical savanna (dry winter), Köppen Aw). The hottest month is May with an average daily high near 38°C, while the coldest is December averaging around 21°C at night. Precipitation totals about 766 mm a year and is strongly seasonal — November alone averages 196 mm while March barely receives 1 mm.

☀️ All year

Very hot

Daytime highs near 38°C most of the year.

About 205 days a year above 32 °C

🌙 Nights

Stays warm

Even the coolest nights stay near 21°C.

🌧️ Rain

Moderate rainfall

About 766 mm of rain a year.

Wettest in November

⛅ Sky & trend

Partly cloudy

A roughly even mix of sun and cloud.

+0.3 °C vs 50 years ago

Temperature & precipitation

Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figures

Clear vs cloudy days

Share of days each month that are clear, partly cloudy or cloudy · 1991–2020 · hover a month for the day counts

Tiruchirappalli climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	31	33	36	38	38	37	37	36	36	33	31	30
Avg temp (°C)	26	27	30	32	32	32	31	31	30	29	27	26
Avg low (°C)	20	21	23	26	27	27	26	26	25	24	23	21
Precipitation (mm)	10	3	1	31	17	65	39	68	93	172	196	73

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°C)	31	33	36	38	38	37
Avg temp (°C)	26	27	30	32	32	32
Avg low (°C)	20	21	23	26	27	27
Precipitation (mm)	10	3	1	31	17	65

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	37	36	36	33	31	30
Avg temp (°C)	31	31	30	29	27	26
Avg low (°C)	26	26	25	24	23	21
Precipitation (mm)	39	68	93	172	196	73

How often — frequency of weather events

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	1	0.6	0.9	2	4	3	3	6	7	11	10	7
Days with high ≥ 32°C (days)	5	18	23	22	23	22	24	23	20	15	7	2

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Days with measurable rain (days)	1	0.6	0.9	2	4	3
Days with high ≥ 32°C (days)	5	18	23	22	23	22

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	3	6	7	11	10	7
Days with high ≥ 32°C (days)	24	23	20	15	7	2

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	45	37	38	54	63	75	80	78	73	74	70	58
Clear days (≤ 30% cloud)	11	13	15	7	5	2	0.8	1.0	2	2	4	7
Partly cloudy days (30–70%)	14	11	11	14	13	9	7	9	10	10	9	12
Cloudy days (≥ 70%)	6	4	5	9	14	19	23	21	18	19	18	12
Relative humidity (%)	75	65	56	56	61	63	63	66	70	79	84	82
Wind speed (m/s)	2.4	2.4	2.3	2.2	2.7	3.8	4.0	3.5	2.5	1.8	2.2	2.5

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	45	37	38	54	63	75
Clear days (≤ 30% cloud)	11	13	15	7	5	2
Partly cloudy days (30–70%)	14	11	11	14	13	9
Cloudy days (≥ 70%)	6	4	5	9	14	19
Relative humidity (%)	75	65	56	56	61	63
Wind speed (m/s)	2.4	2.4	2.3	2.2	2.7	3.8

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	80	78	73	74	70	58
Clear days (≤ 30% cloud)	0.8	1.0	2	2	4	7
Partly cloudy days (30–70%)	7	9	10	10	9	12
Cloudy days (≥ 70%)	23	21	18	19	18	12
Relative humidity (%)	63	66	70	79	84	82
Wind speed (m/s)	4.0	3.5	2.5	1.8	2.2	2.5

Methodology & sources

Temperature & precipitation — 1991–2020 normals computed from 27 years of daily observations at Tiruchchirapalli, a weather station, about 6 km from the city centre. The underlying daily records come from NOAA's global station network.

Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.

How we build these numbers →