Climate averages 1991–2020
Moroni weather
in December.
A hot, wet month: the warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a hot month in Moroni: daytime highs average 30.0°C and nights cool to about 25.9°C. By daytime temperature it is the warmest month of the year.
Expect about 166 mm of rain on roughly 21 days, which makes December a wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 48 min on an average December day.
The nearest other city in this atlas is Mamoudzou (246 km away). In December its highs average 27.9°C, 2.0°C cooler than Moroni, with 109 mm of rain.
From December to January, average highs fall by 0.4°C to 29.6°C, and monthly rainfall rises from 166 mm to 240 mm.
The annual picture
December 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
Moroni climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.6°C26.1°C | 26.1°C | 240 | 22.8 | 12.713 h |
| February | 29.6°C26.1°C | 26.1°C | 213 | 21.7 | 12.512 h |
| March | 29.8°C26.1°C | 26.1°C | 199 | 25.8 | 12.212 h |
| April | 29.6°C26.0°C | 26.0°C | 124 | 22.6 | 11.812 h |
| May | 28.6°C25.3°C | 25.3°C | 63 | 17.1 | 11.612 h |
| June | 27.2°C24.0°C | 24.0°C | 44 | 15.2 | 11.411 h |
| July | 26.6°C23.1°C | 23.1°C | 40 | 15.2 | 11.512 h |
| August | 27.0°C22.4°C | 22.4°C | 27 | 10.3 | 11.712 h |
| September | 27.9°C22.8°C | 22.8°C | 20 | 7.4 | 12.012 h |
| October | 29.0°C24.0°C | 24.0°C | 33 | 9.0 | 12.412 h |
| November | 29.7°C25.2°C | 25.2°C | 69 | 13.2 | 12.613 h |
| December, selected | 30.0°C25.9°C | 25.9°C | 166 | 21.0 | 12.813 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
December in nearby cities
- Mamoudzou in DecemberMayotte · 246 kmHigh 27.9°C · Low 25.9°C · 109 mm rain
- Pemba in DecemberMozambique · 329 kmHigh 30.7°C · Low 24.8°C · 166 mm rain
- Mtwara in DecemberTanzania · 371 kmHigh 29.0°C · Low 25.5°C · 123 mm rain
- Nacala in DecemberMozambique · 423 kmHigh 29.4°C · Low 24.2°C · 114 mm rain
- Lindi in DecemberTanzania · 430 kmHigh 30.7°C · Low 24.3°C · 125 mm rain
- Montepuez in DecemberMozambique · 488 kmHigh 30.2°C · Low 21.6°C · 151 mm rain
- Masasi in DecemberTanzania · 498 kmHigh 31.6°C · Low 22.2°C · 103 mm rain
- Mahajanga in DecemberMadagascar · 556 kmHigh 31.2°C · Low 24.6°C · 205 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 Moroni) is explained once on the Moroni year overview and on the Sources, method and limits page.