Weather in Chennai

14-day forecast · updated today, Thursday, October 29, at 2:23 am (GMT+5:30)

Now · clear 78 °F

Feels like: 85 °F
Low / high: 77 / 89 °F
Rain: 4%
Wind: 7 mph SW

→ 29.75 inHg · steady UV 9 · very high

Today in Chennai: partly cloudy, 77 °F to 89 °F, with a 4% chance of rain and a light breeze from the southwest (7 mph). Tomorrow, partly cloudy, 78 °F to 89 °F and a 10% chance of rain. The warmest day of the week is Friday 30, at 89 °F. Next likely rain: Monday 2 (78%).

Temperatures for the next 14 days

89° 77°
Today
89° 78°
Fri 30
87° 77°
Sat 31
87° 77°
Sun 1
86° 76°
Mon 2
88° 76°
Tue 3
83° 76°
Wed 4
84° 75°
Thu 5
83° 76°
Fri 6
84° 75°
Sat 7
81° 75°
Sun 8
82° 74°
Mon 9
83° 73°
Tue 10
84° 74°
Wed 11

Day by day

Day	Sky	Low / high	Rain	Max wind	Max wave	High tides	Model
Today · 29	Partly cloudy	77 / 89 °F	4%	9 mph S	3.0 ft	9:47 am · 10:27 pm	ECMWF
Fri 30	Partly cloudy	78 / 89 °F	10%	6 mph S	3.0 ft	10:36 am · 11:18 pm	ECMWF
Sat 31	Light drizzle	77 / 87 °F	29% · 0.04 in	7 mph E	2.4 ft	11:35 am	ECMWF
Sun 1	Light drizzle	77 / 87 °F	29% · 0.01 in	9 mph NNE	2.2 ft	12:19 am · 12:52 pm	ECMWF
Mon 2	Drizzle	76 / 86 °F	78% · 0.21 in	6 mph W	1.8 ft	1:32 am · 2:29 pm	ECMWF
Tue 3	Drizzle	76 / 88 °F	55% · 0.28 in	6 mph SW	1.8 ft	2:52 am · 4:00 pm	ECMWF
Wed 4	Light drizzle	76 / 83 °F	46% · 0.17 in	4 mph SSE	1.4 ft	4:06 am · 5:08 pm	ECMWF
Thu 5	Light drizzle	75 / 84 °F	47% · 0.02 in	6 mph E	1.4 ft	5:05 am · 5:58 pm	ECMWF
Fri 6	Light drizzle	76 / 83 °F	53% · 0.07 in	7 mph NNE	1.7 ft	5:54 am · 6:39 pm	ECMWF
Sat 7	Light drizzle	75 / 84 °F	59% · 0.26 in	7 mph NNE	2.8 ft	6:36 am · 7:15 pm	ECMWF
Sun 8	Drizzle	75 / 81 °F	66% · 0.43 in	7 mph NNE	2.9 ft	7:13 am · 7:48 pm	ECMWF
Mon 9	Drizzle	74 / 82 °F	59% · 0.40 in	10 mph NNE	3.2 ft	7:47 am · 8:20 pm	ECMWF
Tue 10	Light showers	73 / 83 °F	66% · 0.59 in	11 mph N	3.5 ft	8:20 am · 8:52 pm	ECMWF
Wed 11	Light drizzle	74 / 84 °F	73% · 0.07 in	11 mph NNE	4.0 ft	8:51 am · 9:23 pm	ECMWF

Each day comes from the best model covering this spot: regional ones first (HRRR and NBM in the U.S., AROME, ICON-EU), then ECMWF; day 16, NOAA GFS. Waves: Météo-France up to day 10, then ECMWF WAM, coarser and further offshore. High tides: our own tide calculation.

Today, every 3 hours

Time	12:00 am	3:00 am	6:00 am	9:00 am	12:00 pm	3:00 pm	6:00 pm	9:00 pm
Sky	Clear	Clear	Mainly clear	Partly cloudy	Clear sky	Clear sky	Clear	Clear
Temperature	80°	78°	78°	84°	89°	86°	83°	82°
Chance of rain	1%	0%	0%	0%	1%	4%	1%	0%
Rain	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in
Wind (mph)	6 SW	7 SW	6 SW	4 SW	4 SSE	9 SSE	8 SSE	8 S
Humidity	85%	87%	88%	70%	65%	78%	85%	89%
UV	0	0	0	5	8	2	0	0
Model	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF

Do the models agree?

Low confidence

They don't agree on temperature on Sunday 1: it may change, so check again closer to the day.

What 4 forecast models say for the next few days. The closer they are, the more reliable the forecast.

HighRainWind

Do the models agree? · High
High (°F)	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF	89°	89°	87°	87°	86°	88°	83°
AIFS	90°	89°	87°	82°	85°	86°	86°
GFS	96°	96°	95°	92°	91°	88°	87°
ICON	95°	96°	91°	90°	86°	90°	86°
Confidence	medium	medium	medium	low	medium	high	high

Do the models agree? · Rain
Rain	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF	0	0	0.04 in	0.01 in	0.21 in	0.28 in	0.17 in
AIFS	0	0	0.05 in	1.02 in	0.33 in	0.17 in	0.17 in
GFS	0	0	0	0	0.19 in	1.43 in	0.71 in
ICON	0	0	0.05 in	0	0.31 in	0.02 in	0.38 in
Confidence	high	high	medium	medium	high	medium	medium

Do the models agree? · Wind
Wind (mph)	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF	918	614	717	921	618	620	413
AIFS	9	9	8	9	8	6	7
GFS	1324	1219	1314	1211	109	812	78
ICON	514	618	619	617	416	517	514
Confidence	medium	high	medium	high	high	high	high

Chance of rain from the ensemble models

Model	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF (51 scenarios)	4%	10%	29%	29%	78%	55%	46%
GFS (GEFS, 31 scenarios)	6%	7%	19%	35%	45%	56%	35%

Each model's day runs midnight to midnight local time; models that reach fewer days are left blank. Rain: daily total. Wind: the day's highest average wind and, in small type, the strongest gust. Highlighted: values that stand out from the rest. The chance of rain comes from many runs of the same model with slightly different starting data.

Outlook

How the coming weeks and months compare with what is normal for the time of year. It is a trend, not a day-by-day forecast.

Next few weeks, compared with normal: a bit warmer and a bit drier.

Next 6 weeks

When	TemperatureTemp.	Rain	Sea	Typical high / low
Nov 2 – Nov 8Nov 2–Nov 8	A bit above +1.8 °F	A bit below −38%	—	—
Nov 9 – Nov 15Nov 9–Nov 15	Normal +0.7 °F	Normal	—	—
Nov 16 – Nov 22Nov 16–Nov 22	Normal +0.7 °F	A bit below −22%	—	84° / 75°
Nov 23 – Nov 29Nov 23–Nov 29	A bit above +0.9 °F	A bit below −41%	—	84° / 75°
Nov 30 – Dec 6Nov 30–Dec 6	A bit above +1.1 °F	A bit below −44%	—	84° / 74°

Coming months

When	TemperatureTemp.	Rain	Sea
November	A bit above +1.8 °F	Normal	A bit above +1.4 °F
December	A bit above +2.3 °F	Normal	Above +2.0 °F
January	Above +2.7 °F	A bit below −40%	Above +2.3 °F
February	Above +2.9 °F	Normal	Above +2.9 °F
March	Above +2.9 °F	Normal	Above +2.5 °F

Weeks: ECMWF 46-day (average of its scenarios), against the normal of the last 20 years for those dates. Months: ECMWF SEAS5. Rain: total against normal. The further ahead, the closer it gets to normal and the less detail it can give.

Chennai climate by monthClimate by month

Normal weather for each month (1991–2020 averages)

The best time to visit Chennai is from January to February: highs of 86 °F to 89 °F, barely 1 rainy day a month and 9 hours of sunshine a day.

Cyclone season: in May and from October to December. In the last 30 years (1996–2025), 15 tropical cyclones passed within 93 mi of Chennai, about 5 every 10 years; 5 of them with hurricane-force winds (74 mph or more). The most recent: Fengal, in November 2024.

86° 71°

JanJ
89° 72°

FebF
93° 75°

MarM
96° 79°

AprA
100° 82°

MayM
99° 81°

JunJ
96° 80°

JulJ
95° 79°

AugA
95° 78°

SepS
91° 77°

OctO
87° 74°

NovN
85° 72°

DecD

Highs and lows
Monthly rainfall
Best time

Month	High	Low	Rain	Rainy daysDays	Sun (h/day)	Water	Waves	Cyclones
JanuaryJan	86°	71°	0.69 in	2	8.7	80°	3.0 ft	–
FebruaryFeb	89°	72°	0.19 in	1	9.6	81°	2.5 ft	–
MarchMar	93°	75°	0.14 in	1	9.8	83°	2.3 ft	–
AprilApr	96°	79°	0.85 in	2	9.0	85°	2.7 ft	–
MayMay	100°	82°	2.04 in	4	8.5	85°	3.5 ft	2
JuneJun	99°	81°	2.91 in	8	7.3	84°	3.5 ft	1
JulyJul	96°	80°	4.06 in	12	5.9	84°	3.3 ft	–
AugustAug	95°	79°	6.56 in	15	6.2	83°	3.3 ft	–
SeptemberSep	95°	78°	4.93 in	15	6.6	84°	3.1 ft	–
OctoberOct	91°	77°	11.62 in	18	5.9	85°	2.9 ft	2
NovemberNov	87°	74°	13.42 in	16	6.3	83°	3.6 ft	5
DecemberDec	85°	72°	5.19 in	8	7.0	81°	3.9 ft	5

Month	Water	Waves	Cyclones
Jan	80°	3.0 ft	–
Feb	81°	2.5 ft	–
Mar	83°	2.3 ft	–
Apr	85°	2.7 ft	–
May	85°	3.5 ft	2
Jun	84°	3.5 ft	1
Jul	84°	3.3 ft	–
Aug	83°	3.3 ft	–
Sep	84°	3.1 ft	–
Oct	85°	2.9 ft	2
Nov	83°	3.6 ft	5
Dec	81°	3.9 ft	5

Days: rainy days in the month. Sun: hours a day.

A normal year brings 52.60 in of rain on about 101 days and about 2,750 hours of sunshine.

Cyclones: how many tropical cyclones (tropical storms, hurricanes and typhoons) passed within 93 mi in each month from 1996 to 2025, according to IBTrACS (NOAA).

1991–2020 averages. Highs, lows and rainfall: TerraClimate; rainy days (0.04 in or more): NASA POWER (MERRA-2); sunshine hours: estimated from solar radiation; water: NOAA OISST; waves (average height): ERA5, 2011–2020. Normals are not a forecast: any given year can turn out very different. Sources and licenses

Temperature

Now78 °Ffeels like 85 °F

Tomorrow78 / 89 °F

It's 78 °F now (feels like 85 °F). Today, 77 °F to 89 °F; tomorrow, 78 °F to 89 °F.

Chance of rain

Today 4%
Fri 30 10%
Sat 31 29% 0.04 in
Sun 1 29% 0.01 in
Mon 2 78% 0.21 in
Tue 3 55% 0.28 in
Wed 4 46% 0.17 in

Today the chance of rain reaches 4%. The next day with likely rain is Monday 2: 78% and 0.21 in.

Recent rain: last 24 hours, 0.00 in; last 3 days, 0.05 in; last 7 days, 2.83 in.

Humidity and dew point

Humidity86%

Dew point74 °F

Humidity is 86% now and the dew point is 74 °F. With a dew point this high, it feels muggy.

The dew point is the temperature at which the air becomes saturated: the higher it is, the heavier the air feels.

Visibility and fog

Now15 migood

Clouds17%

Visibility is good now (15 mi). No fog expected today.

The model gives visibility up to about 15 mi: beyond that, the horizon is clear.

UV index

Now0

Today's peak9very high

Fri 30: 8 · Sat 31: 8 · Sun 1: 7

Index	Level	What to do
0–2	low	No special protection needed.
3–5	moderate	Hat, sunglasses and sunscreen around midday.
6–7	high	Sunscreen, hat and shade between 12 and 4 pm.
8–10	very high	Avoid the midday sun; reflection off the water adds to it.
11+	extreme	Avoid the sun between 11 am and 5 pm; protect yourself even if it is cloudy.

Reflection off water and sand adds radiation: protect yourself more on a boat or at the beach.

Barometric pressure

↗ Rising Anglers say fish bite less for a while
→ Steady · now Anglers expect normal activity
↘ Falling Anglers say fish feed more before the change

29.6029.8030.00 29.94

Steady now (−0.03 inHg in 3 hours). Over the next 48 hours: +0.13 inHg. Steady pressure: anglers expect normal activity. Fast changes, either way, tend to affect fishing.

Air and pollen

Air qualityModerate · 52

Saharan dustNo

Previous days

The weather over the last 30 days, as the models analyzed it. Tap a day to see it hour by hour.

Day	Sky	Low / high	Rain	Max wind
Wed 28	Overcast	77 / 92 °F	0	10 mph SW
Tue 27	Overcast	77 / 90 °F	0	9 mph WNW
Mon 26	Light drizzle	78 / 87 °F	0.07 in	13 mph N
Sun 25	Showers	78 / 82 °F	1.10 in	6 mph NE
Sat 24	Drizzle	78 / 87 °F	0.25 in	6 mph E
Fri 23	Light showers	77 / 84 °F	0.64 in	7 mph N
Thu 22	Showers	76 / 84 °F	1.24 in	11 mph NNE

Show all 30 days

Day	Sky	Low / high	Rain	Max wind
Wed 21	Light showers	77 / 84 °F	1.11 in	10 mph NNE
Tue 20	Showers	78 / 86 °F	0.59 in	13 mph N
Mon 19	Drizzle	79 / 87 °F	0.27 in	9 mph N
Sun 18	Heavy showers	77 / 86 °F	1.74 in	9 mph NNW
Sat 17	Showers	78 / 88 °F	1.31 in	7 mph W
Fri 16	Showers	79 / 85 °F	0.66 in	5 mph NNW
Thu 15	Light showers	80 / 85 °F	0.74 in	7 mph SSE
Wed 14	Light showers	78 / 88 °F	0.39 in	8 mph NNE
Tue 13	Overcast	84 / 93 °F	0	13 mph NE
Mon 12	Light drizzle	83 / 93 °F	0.01 in	13 mph NE
Sun 11	Overcast	83 / 93 °F	0	11 mph NE
Sat 10	Overcast	84 / 94 °F	0	10 mph ENE
Fri 9	Light drizzle	84 / 94 °F	0.01 in	8 mph E
Thu 8	Overcast	85 / 93 °F	0	8 mph E
Wed 7	Light drizzle	83 / 91 °F	0.01 in	8 mph ESE
Tue 6	Drizzle	76 / 94 °F	0.24 in	8 mph S
Mon 5	Light drizzle	82 / 94 °F	0.08 in	7 mph S
Sun 4	Light drizzle	82 / 92 °F	0.01 in	9 mph SSE
Sat 3	Light drizzle	82 / 91 °F	0.06 in	8 mph SE
Fri 2	Overcast	83 / 92 °F	0	8 mph E
Thu 1	Overcast	80 / 93 °F	0	7 mph ESE
Wed 30	Light drizzle	82 / 95 °F	0.04 in	6 mph S
Tue 29	Light showers	80 / 97 °F	0.26 in	9 mph S

These are the models at the start of each day (ECMWF and GFS; waves from Météo-France), not readings from a weather station: there can be differences at specific spots.

Questions about the weather in ChennaiQuestions

What's the weather like today in Chennai?

Partly cloudy, from 77 °F to 89 °F, with a light breeze from the southwest (7 mph) and a 4% chance of rain.

Will it rain tomorrow in Chennai?

On Friday 30 the chance of rain is 10% (0.00 in): partly cloudy.

How warm will it be this week?

Between a low of 76 °F and a high of 89 °F; the warmest day, Friday 30.

What's the UV index today?

It reaches 9 (very high). Avoid the midday sun; reflection off the water adds to it.

Is the pressure rising or falling?

It's 29.75 inHg and steady: +0.07 inHg over the last 24 hours.

When is the best time to visit Chennai?

The best time to visit Chennai is from January to February: highs of 86 °F to 89 °F, barely 1 rainy day a month and 9 hours of sunshine a day.

What is the weather like in Chennai in October?

In October, Chennai normally sees highs of 91 °F and lows of 77 °F, with about 18 rainy days (11.62 in for the month) and 6 hours of sunshine a day. The sea is around 85 °F. These are 1991–2020 averages.

What are the warmest and wettest months in Chennai?

The warmest is May, with average highs of 100 °F, and the coldest January, with lows of 71 °F. The wettest is November (13.42 in) and the driest, March.

When is cyclone season in Chennai?

Cyclone season: in May and from October to December. In the last 30 years (1996–2025), 15 tropical cyclones passed within 93 mi of Chennai, about 5 every 10 years; 5 of them with hurricane-force winds (74 mph or more). The most recent: Fengal, in November 2024.

More about Chennai today

Weather near Chennai

Only places with a different forecast: spots a few miles apart share the same model cell and wouldn't add anything.

Learn more

Weather: Open-Meteo, CC BY 4.0, with the best model for each spot and lead time (NOAA HRRR and NBM in the U.S., Météo-France AROME, DWD ICON-EU, ECMWF IFS and NOAA GFS); ECMWF grid point 6.4 mi away. The comparison also uses ICON (DWD), AIFS (ECMWF) and ARPEGE (Météo-France). Outlook: ECMWF 46-day and SEAS5. Chance of rain from ensemble models (ECMWF, GEFS and NBM). UV, air quality and pollen: CAMS (Copernicus).

Forecast from Open-Meteo (CC BY 4.0) with models from ECMWF, NOAA, Météo-France, DWD, Copernicus Marine and CAMS. Updated at 2:23 am (local time).

Spotted a mistake? Tell us · Where the weather and sea data come from