Port Blair (Andamans) weather in August
August in Port Blair: hot, soaked, with clean air — a gamble, with 27 rainy days.
Updated September 2026 · climate normals from ERA5 reanalysis
#10 of 12 months in Port Blair · #1122 of 1413 destinations to visit in August · comfort 58/100 (tier D)
- Days
- 30°C
- Nights
- 25°C
- Wet days
- 27
- Sun
- 8.1 h
- Humidity
- 84%
- Daylight
- 13 h

Traveller notes on Port Blair in August
Other months in Port Blair
Regulars are specific this counts as peak season here, October and November the widely agreed best window, calm seas making this genuinely good for water sports and general sightseeing. Our row backs that hot, genuinely wet read, 30.4C reading as a hot 34C, over 25.4C nights feeling 28C, with a substantial 178.9mm of rain across 16.6 days and humidity at 80 percent. Regulars are honest the northeast monsoon can still reach the islands this month, real rain a genuine possibility, though the typical pattern is a burst of rain followed by sunshine again rather than a washed-out day. The sea sits at a bath-warm 29.7C. The record: 9.8 hours of sun, a 22.6 kph wind and AQI 45.
Regulars describe mornings and evenings as noticeably cooler than the hot, humid days, with light cotton clothing, shorts and a hat standard advice, and are confident there's little real chance of rain interrupting a trip this month. Our row shows a wetter picture than that confidence suggests, 156.3mm of rain across 10.8 days, alongside real heat, 30C reading as a hot 33C at 77 percent humidity, over 25C nights. Regulars are consistent this sits inside the islands' best overall window, October through April, when conditions are considered most reliable for sightseeing and water activities. The sea holds a warm 29.1C. The record: 9.7 hours of sun, a 25.2 kph wind and AQI 58.
April is the closing month of the Andaman season, which regulars run from October, and it is the hot end of it: mid to high thirties by day, high twenties at night, bright and humid, with evenings that come good. Our row reads 32.5C over 26C and turns that into 40C and 31C once the humidity is counted. Their advice is about shade and breeze rather than timing - in direct sun it burns, in shade with air moving it is fine. Being the tail of the season it is also the cheap end, with deals on hotels and transport before the May to September monsoon closes the sea. The record: 65.9mm across 8.5 days, 11.1 hours of sun, a 30.7C sea and AQI 60.
January sits in the middle of the Andamans' good window, October to April, well clear of the May-to-September monsoon and its rough seas. What regulars add is a pricing line that runs through the month: peak season is roughly the 15th of December to the 15th of January, and a booking after that date can cost around twenty percent less for weather they describe as still pleasant into mid-February. Our row backs the second half as no compromise - 29.8C over a 24.5C night, 54.3mm across 7.8 precipitation days, and a 28.2C sea. For beach rather than town, they send you on to Havelock. The record: feels-like 33C, humidity 74 percent, 10 hours of sun, a 23.7 kph wind and AQI 62.
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Port Blair climate normals — August
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Port Blair in August
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Quietschool holidays in 4 of the markets that fill it, one of its worst months for weather(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Port Blair's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Toughest weatherPort Blair's weather peaks January–March.
Best weatherFair weatherToughest weather
What's on in Port Blair in August
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Rule
Entry rules for foreign visitors
1 Jan – 31 DecBook earlyMost of the tourist islands no longer need the old restricted-area permit and foreign nationals simply register on arrival, but the Nicobars and the tribal reserves stay closed to everyone and a few nationalities still need clearance in advance. Source ↗
- Rule
Andaman Trunk Road convoys
1 Jan – 31 DecClosuresThe road north to Baratang runs through the Jarawa reserve in timed convoys with a police escort, and stopping, photographing or interacting with anyone in the reserve is an offence. Convoys leave before dawn. Source ↗
- Season
Monsoon and rough crossings
15 May – 30 Sep · usuallyRiskClosuresThe islands take the southwest monsoon early and hard. Inter-island ferries are merged or cancelled at short notice, dive boats stop, and a trip built on tight connections falls apart.
- Season
Wet season
MonsoonRisk27 rainy days and about 282 mm in the month — the real kind of rainy season, not afternoon showers.
from the climate normals
Where is Port Blair?
Port Blair in August — FAQ
- Is August a good time to visit Port Blair?
- August in Port Blair: hot, soaked, with clean air — a gamble, with 27 rainy days. It ranks #10 of 12 months for Port Blair on SeasonMap's comfort score (58/100).
- What is the weather like in Port Blair in August?
- In August, Port Blair averages a daily high of 29.7°C and a low of 25.1°C, with about 282.4 mm of rain over roughly 26.9 rainy days.
- What is the air quality in Port Blair in August?
- Port Blair has a mean US Air Quality Index of about 37 in August.