Boisar, India Climate
The warmest month is April, with an average high of 40°C; the coldest is January, with an average low of 16°C. A normal year brings 2135 mm of precipitation.
Temperature through the year
The normal daily high and low. The line marks today.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
Normals for Sep 24
- Normal high
- 30°C
- Normal low
- 23°C
- Reanalysis high
- 31°Cin 1992
- Reanalysis low
- 21°Cin 1994
- Chance of a wet day
- 62%
- Daylight
- 12 h 06 min
Month by month
Averages for 1991-2020. Wet days have at least 1 mm of precipitation in the reanalysis. Each month links to its own page.
| Month | Avg high | Avg low | Warmest | Coldest | Precipitation | Wet days |
|---|---|---|---|---|---|---|
| January | 33°C | 16°C | 39°C (2009) | 9°C (1991) | 0 mm | 0.0 |
| February | 35°C | 18°C | 42°C (2006) | 9°C (2008) | 3 mm | 0.0 |
| March | 38°C | 21°C | 46°C (1999) | 14°C (2012) | 3 mm | 0.0 |
| April | 40°C | 23°C | 45°C (2019) | 18°C (1996) | 3 mm | 0.0 |
| May | 39°C | 25°C | 46°C (1998) | 21°C (2003) | 16 mm | 3.1 |
| June | 33°C | 26°C | 43°C (1991) | 22°C (1992) | 429 mm | 21.0 |
| July | 29°C | 25°C | 35°C (1995) | 23°C (2000) | 747 mm | 27.9 |
| August | 28°C | 24°C | 32°C (1998) | 22°C (2008) | 499 mm | 27.9 |
| September | 29°C | 23°C | 34°C (2018) | 18°C (1994) | 336 mm | 21.0 |
| October | 32°C | 21°C | 38°C (1991) | 15°C (2016) | 84 mm | 9.3 |
| November | 33°C | 19°C | 38°C (2002) | 14°C (1998) | 12 mm | 3.0 |
| December | 33°C | 17°C | 38°C (2002) | 11°C (1991) | 3 mm | 0.0 |
| Year | 33°C | 21°C | 2135 mm | 113 |
Precipitation
Rain and melted snow together. The chance of a wet day is the share of days with at least 1 mm of precipitation in the reanalysis.
2135 mm in a normal year, most in July.
Chance of a wet day
- Chance of a wet day
Humidity and comfort
NASA POWER reanalysis, 1991-2020, for the grid cell around Boisar.
The muggiest month is June, when 100 percent of days are muggy or worse, with a mean dew point of 18°C or more.
| Month | Dew point | Humidity | Dry | Comfortable | Humid | Muggy | Oppressive | Miserable |
|---|---|---|---|---|---|---|---|---|
| January | 6°C | 38% | 91% | 7% | 2% | 0% | 0% | 0% |
| February | 6°C | 37% | 87% | 9% | 4% | 0% | 0% | 0% |
| March | 9°C | 39% | 69% | 22% | 8% | 1% | 0% | 0% |
| April | 15°C | 49% | 18% | 29% | 37% | 17% | 0% | 0% |
| May | 20°C | 59% | 0% | 3% | 13% | 54% | 28% | 1% |
| June | 24°C | 78% | 0% | 0% | 0% | 5% | 39% | 56% |
| July | 25°C | 90% | 0% | 0% | 0% | 0% | 13% | 87% |
| August | 24°C | 91% | 0% | 0% | 0% | 0% | 47% | 53% |
| September | 24°C | 89% | 0% | 0% | 0% | 2% | 58% | 40% |
| October | 20°C | 75% | 2% | 4% | 20% | 26% | 36% | 11% |
| November | 15°C | 58% | 32% | 24% | 21% | 16% | 7% | 0% |
| December | 9°C | 43% | 78% | 12% | 7% | 4% | 0% | 0% |
Comfort is judged by the day's mean dew point: dry below 13°C, comfortable to 16°C, humid to 18°C, muggy to 21°C, oppressive to 24°C, miserable above.
Clouds
Average share of the sky covered, from satellite (CERES and GEWEX SRB) by way of NASA POWER, 1991-2020.
The clearest month is April, with the sky 22 percent covered on average; the cloudiest is July, at 90 percent.
Wind
The mean wind speed over the whole day, from the MERRA-2 reanalysis by way of NASA POWER. Gusts run well above it.
The windiest month is July, averaging 20.5 km/h at 10 meters (33 feet) above the ground.
Daylight and sunshine
The longest day is Jun 16, with 13 h 20 min of daylight; the shortest is Dec 17, with 10 h 56 min.
- Day length
Solar energy
Average daily sunshine reaching the ground on a flat surface, in kilowatt-hours per square meter, clouds included.
Month pages
The weather in Boisar in each month, day by day.
What this means
A normal is the average of the thirty years 1991 to 2020, the period the World Meteorological Organization and NOAA use for comparison. It is an average, not a forecast: most days depart from it, and some by a long way.
Where no station record is within reach, the extremes shown are the highest and lowest the reanalysis produced for the date in 1991-2020, not measured records.
Cloud, humidity, wind and sunshine come from a reanalysis: a weather model run over the past with every observation fed in, averaged over a grid cell about 50 km across. It is consistent everywhere on Earth; it smooths local detail such as a lake shore or a valley.
More for this place
Nearby
Sources
Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.