10-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Night
Rain showers
25°
Feels like 34°
Wind↑ N 13 km/h
Gusts20 km/h
Humidity 88 %
💧 4.9 mm
Afternoon
Mainly clear
28°
Feels like 36°
Wind↑ NNE 24 km/h
Humidity 65 %
11-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Night
Clear sky
26°
Feels like 33°
Wind↑ NNE 16 km/h
Gusts22 km/h
Humidity 71 %
Afternoon
Clear sky
28°
Feels like 35°
Wind↑ NE 23 km/h
Humidity 61 %
12-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Night
Clear sky
25°
Feels like 32°
Wind↑ NNE 15 km/h
Gusts22 km/h
Humidity 69 %
Afternoon
Clear sky
27°
Feels like 35°
Wind↑ NNE 22 km/h
Humidity 62 %
13-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Night
Mainly clear
26°
Feels like 33°
Wind↑ NNE 16 km/h
Humidity 69 %
Afternoon
Clear sky
27°
Feels like 34°
Wind↑ NNE 21 km/h
Humidity 63 %
Chennai forecast in charts · next 7 days
The week ahead: highs and lows
▲ This week runs +1.8° warmer than usual
Highs Lows Usual for the season (1991–2020 average)
Hourly detail
Temperature (°C) Rain (mm) Wind (km/h)
Chennai climate: what a normal year looks like
Swimmers find the warmest sea in May (30 °C) and the coolest in January (27 °C).
Afternoons reach 30 °C or more from March to October; the typical peak is 34 °C in June.
The wet season is concentrated from October to December, which brings 57% of the annual total; November by itself averages 236 mm.
The hottest stretch is June, when afternoons average 34 °C; the coldest is January, when nights average 23 °C.
The coming week looks normal for October: forecast highs average 30 °C, against a usual 30 °C.
30-year averages (1991–2020)
Month
Typical high
Typical low
Rainfall
Sea
Jan
27 °C
23 °C
18 mm
27 °C
Feb
29 °C
23 °C
8 mm
27 °C
Mar
31 °C
25 °C
9 mm
28 °C
Apr
33 °C
27 °C
16 mm
29 °C
May
34 °C
29 °C
39 mm
30 °C
Jun
34 °C
29 °C
69 mm
29 °C
Jul
33 °C
28 °C
76 mm
29 °C
Aug
32 °C
27 °C
99 mm
29 °C
Sep
32 °C
27 °C
106 mm
29 °C
Oct
30 °C
26 °C
216 mm
29 °C
Nov
28 °C
25 °C
236 mm
28 °C
Dec
27 °C
24 °C
121 mm
27 °C
Whole year
31 °C
26 °C
1,010 mm
28 °C
Source: our own processing of the ERA5 reanalysis (Copernicus/ECMWF) for 13.09° N, 80.28° E, 1991–2020. ERA5 averages over a 0.25° grid (about 25 km): hills, a coastline or the heat of the city itself can shift local values by a degree or two.
Air you breathe in Chennai: pollution and pollen
4/6
Poor
European Air Quality Index (EAQI), from Copernicus CAMS
PM2.546µg/m³
PM1049µg/m³
Copernicus CAMS model, updated several times a day.
Rain radar around Chennai
Rain observed over the last two hours by official weather radars around Chennai, followed by the radar forecast for the next hour where the weather service provides one.
Rain radarLast two hours, then forecast where available · drag the timeline
No open weather radar covers Chennai yet: the map shows our hour-by-hour rain forecast (ICON, GFS).
Moon over Chennai
Waning gibbous
79 % illuminated · 19.3 days
Rise 23:35 Set 12:05
Sat31/1069%
Sun1/1159%
Mon2/1149%Last quarter
Tue3/1138%
Wed4/1128%
Thu5/1119%
Fri6/1112%
Sat7/116%
Sun8/112%
Mon9/110%
Tue10/111%New moon
Wed11/113%
Moonrise and moonset in local time (Asia/Kolkata); phase and lit fraction from a synodic calculation.
Sea and tides near Chennai
Tide station used: Chennai
🌊 Sea surface
29.3 °C
satellite, 30/10
Sea state
Smooth
waves 1.2 m
Period
7 s
Swell
0.5 m
ThuThu 29/10
High tide09:430.7 m
Low tide15:500.2 m
High tide22:250.7 m
TodayFri 30/10
Low tide04:470.3 m
High tide10:320.6 m
Low tide16:370.2 m
High tide23:190.7 m
TomorrowSat 31/10
Low tide05:470.3 m
High tide11:310.6 m
Low tide17:330.3 m
SunSun 01/11
High tide00:220.7 m
Low tide07:000.3 m
High tide12:500.5 m
Low tide18:450.3 m
Indicative heights above chart datum. Coefficient: 20 for the weakest tides, 120 for the strongest.
Look up a past day in Chennai
Curious about the weather in Chennai on a given day? Choose a date: we read it from the ERA5 reanalysis (ECMWF / Copernicus C3S), which runs until about a week ago.
Chennai weather at a glance
This page gathers everything about the weather in Chennai, Tamil Nadu: conditions now, the forecast for each part of the day and the trend for the coming week. At the moment the sky is “rain showers”, it is 28 °C (feels like 42 °C) and the wind blows at 14 km/h.
Expected range today: 28 °C to 32 °C and around 1 mm of rain; keep an eye on thunderstorms. The forecast comes from the AtmoAtlas engine, which combines ECMWF-AIFS, NOAA GFS and DWD ICON, adjusts cloud cover with METAR reports and uses convective energy (CAPE) to flag storms, plus the tide times for Chennai.
Use the Chennai forecast in your own website or app: one JSON call returns weather, air quality, tides and sun and moon times. The free key needs no card.
