Climate averages 1991–2020
Port Blair weather
in July.
A hot, very wet month: the 5th warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
July is a hot month in Port Blair: daytime highs average 28.1°C and nights cool to about 26.2°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 295 mm of rain on roughly 28 days, which makes July a very wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 44 min on an average July day.
The nearest other city in this atlas is Pathein (607 km away). In July its highs average 28.8°C, 0.7°C warmer than Port Blair, with 475 mm of rain.
Among the 692 cities listed in India, Port Blair ranks joint 597th of 692 for the warmest July highs and joint 428th of 692 for the driest July (rainfall, lowest first). The mean July high of those 692 cities is 31.0°C; Port Blair is 2.9°C cooler than that mean.
From July to August, average highs fall by 0.2°C to 27.9°C, and monthly rainfall rises from 295 mm to 296 mm.
The annual picture
July in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Port Blair climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 27.3°C25.3°C | 25.3°C | 33 | 4.9 | 11.512 h |
| February | 27.9°C25.3°C | 25.3°C | 10 | 2.0 | 11.812 h |
| March | 28.8°C25.8°C | 25.8°C | 32 | 4.0 | 12.112 h |
| April | 29.8°C26.9°C | 26.9°C | 70 | 8.5 | 12.412 h |
| May | 29.1°C26.8°C | 26.8°C | 271 | 24.5 | 12.713 h |
| June | 28.4°C26.6°C | 26.6°C | 327 | 25.7 | 12.813 h |
| July, selected | 28.1°C26.2°C | 26.2°C | 295 | 27.9 | 12.713 h |
| August | 27.9°C26.1°C | 26.1°C | 296 | 27.5 | 12.513 h |
| September | 27.7°C25.8°C | 25.8°C | 323 | 27.3 | 12.212 h |
| October | 27.7°C25.7°C | 25.7°C | 265 | 24.9 | 11.912 h |
| November | 27.8°C26.0°C | 26.0°C | 180 | 16.4 | 11.612 h |
| December | 27.5°C25.8°C | 25.8°C | 93 | 8.7 | 11.511 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
July in nearby cities
- Pathein in JulyMyanmar · 607 kmHigh 28.8°C · Low 24.5°C · 475 mm rain
- Dawbon in JulyMyanmar · 621 kmHigh 29.4°C · Low 24.5°C · 464 mm rain
- Myeik in JulyMyanmar · 642 kmHigh 28.1°C · Low 24.1°C · 644 mm rain
- Dawei in JulyMyanmar · 648 kmHigh 26.9°C · Low 23.6°C · 715 mm rain
- Kyauktan in JulyMyanmar · 674 kmHigh 28.5°C · Low 24.8°C · 484 mm rain
- Set Ka Lay in JulyMyanmar · 678 kmHigh 29.2°C · Low 24.5°C · 510 mm rain
- Hlaingthaya in JulyMyanmar · 678 kmHigh 29.2°C · Low 24.5°C · 510 mm rain
- Yangon in JulyMyanmar · 679 kmHigh 29.0°C · Low 24.4°C · 484 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Port Blair) is explained once on the Port Blair year overview and on the Sources, method and limits page.