Moroni, Comoros Climate
The warmest month is March, with an average high of 28°C; the coldest is August, with an average low of 24°C. A normal year brings 997 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
- 26°C
- Normal low
- 25°C
- Reanalysis high
- 27°Cin 2019
- Reanalysis low
- 23°Cin 1996
- Chance of a wet day
- 18%
- Daylight
- 12 h 08 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 | 28°C | 27°C | 30°C (2002) | 25°C (1993) | 183 mm | 24.8 |
| February | 28°C | 27°C | 30°C (1998) | 26°C (2002) | 153 mm | 22.6 |
| March | 28°C | 28°C | 30°C (2016) | 25°C (1993) | 158 mm | 24.8 |
| April | 28°C | 27°C | 30°C (1998) | 26°C (2017) | 135 mm | 21.0 |
| May | 28°C | 27°C | 29°C (2005) | 25°C (2000) | 68 mm | 12.4 |
| June | 26°C | 25°C | 28°C (2007) | 24°C (2002) | 39 mm | 9.0 |
| July | 26°C | 24°C | 27°C (2017) | 23°C (2001) | 40 mm | 9.3 |
| August | 25°C | 24°C | 27°C (2015) | 22°C (1992) | 25 mm | 6.2 |
| September | 26°C | 24°C | 27°C (2019) | 22°C (1993) | 21 mm | 6.0 |
| October | 26°C | 25°C | 28°C (2015) | 23°C (1996) | 37 mm | 9.3 |
| November | 27°C | 26°C | 29°C (2017) | 25°C (1996) | 42 mm | 9.0 |
| December | 28°C | 27°C | 30°C (2015) | 24°C (2004) | 96 mm | 18.6 |
| Year | 27°C | 26°C | 997 mm | 173 |
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.
997 mm in a normal year, most in January.
Chance of a wet day
- Chance of a wet day
Humidity and comfort
NASA POWER reanalysis, 1991-2020, for the grid cell around Moroni.
The muggiest month is October, when 101 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 | 24°C | 80% | 0% | 0% | 0% | 0% | 44% | 56% |
| February | 24°C | 80% | 0% | 0% | 0% | 0% | 40% | 60% |
| March | 24°C | 80% | 0% | 0% | 0% | 0% | 43% | 57% |
| April | 24°C | 78% | 0% | 0% | 0% | 0% | 58% | 42% |
| May | 23°C | 76% | 0% | 0% | 0% | 10% | 82% | 8% |
| June | 21°C | 74% | 0% | 0% | 1% | 56% | 42% | 0% |
| July | 20°C | 74% | 0% | 0% | 5% | 85% | 10% | 0% |
| August | 20°C | 74% | 0% | 0% | 7% | 86% | 7% | 0% |
| September | 20°C | 76% | 0% | 0% | 2% | 77% | 21% | 0% |
| October | 21°C | 78% | 0% | 0% | 0% | 35% | 65% | 1% |
| November | 23°C | 78% | 0% | 0% | 0% | 4% | 91% | 5% |
| December | 23°C | 78% | 0% | 0% | 0% | 1% | 72% | 27% |
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 October, with the sky 34 percent covered on average; the cloudiest is February, at 67 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 June, averaging 19.1 km/h at 10 meters (33 feet) above the ground.
Daylight and sunshine
The longest day is Dec 13, with 12 h 49 min of daylight; the shortest is Jun 12, with 11 h 26 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 Moroni 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
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.