Weather in Goa in September

How September compares

September is the 10th warmest month of the year in Goa and ranks 52nd of 134 destinations we compare for September - see where else is hot in September. Within India it is 1st of 2 (India in September). Against London's average high of 18.6°C in September, Goa is 9.3°C warmer by day and 12.8°C warmer at night.

Daytime and night-time in September

The typical September day in Goa peaks at 27.9°C, but that is an average: the warmest 10% of days reach 29.3°C or more. About 99% of days top 25°C and 1 in 24 pass 30°C. Nights average 24.0°C; one night in ten drops to 23.2°C or lower, so pack a layer for evenings. Between 1991 and 2020 the hottest September day here reached 32.3°C (1994-09-30) and the coldest night 20.2°C (1994-09-22).

Rain in September

Wet (more than 8 rainy days): about 25 days with 1 mm or more, 312 mm in total. Year to year it varies a lot - the wettest September was 2007 with 661 mm, the driest 1997 with 70 mm. Humidity averages 88%.

Sea temperature in September

The sea averages 27.4°C - warm enough to swim (22°c+). Depending on the year it ranges from 26.8°C to 28.0°C. For the warmest sea here, come in May (29.6°C).

Sunshine and daylight

Around 2.1 hours of sunshine a day (estimated from cloud cover), 12.1 hours of daylight: the sun rises about 06:23 and sets about 18:37 local time in mid-September. Average cloud cover is 83%.

Is September a good time to visit Goa?

It is a reasonable choice: hot days but expect showers. The best months for Goa on our scoring are February, January, December; months averaging 25°C or more: Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec.

Warm throughout the day, sticky after dark

Average highs of 27.9°C sound manageable, but humidity of 88% makes this a poor choice if you dislike sticky weather. Keep clothing light and loose, and leave room in your plans for breaks rather than filling every daylight hour. Nights average 24.0°C, so evenings offer little temperature relief; breathable nightwear and accommodation with cooling are sensible priorities. September is towards the cooler end of Goa's year, but that is relative, not a sign of cool conditions. At midday, dress for heat even when skies are cloudy, and carry a lightweight waterproof rather than relying on a heavy jacket for rain protection.

Rain is the main reason to reconsider

With about 25 rainy days, September is not a good fit for a trip built around uninterrupted time outdoors. The catch is not a lack of warmth but the need to change plans when rain arrives. Sunshine averages about 2.1 hours within 12.1 hours of daylight, so there is a substantial gap between having daylight and having sun. Keep outdoor plans movable, carry rain protection and choose footwear you do not mind getting wet. These averages do not tell you when rain will fall, so do not build your itinerary around an assumed dry morning or a predictable afternoon shower.

Warm sea, but limited beach-weather confidence

The sea averages 27.4°C, comfortably warm enough for swimming on temperature alone. That is a genuine advantage if cold water usually puts you off, but warm water does not establish safe swimming conditions: follow local advice before entering. September makes more sense if you are happy to take beach time as the weather allows, rather than treating it as the centre of every day. If your dates are flexible, February, January and December are better overall weather choices. Choose September for its dependable warmth only if frequent rain and limited sunshine are compromises you are comfortable making.