Climate averages 1991–2020
Porto-Novo weather
in December.
A hot, fairly dry month: the 5th warmest and the 2nd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a hot month in Porto-Novo: daytime highs average 30.5°C and nights cool to about 24.7°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 37 mm of rain on roughly 10 days, which makes December a fairly dry month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 45 min on an average December day.
The nearest other city in this atlas is Ekpé (14 km away). In December its highs average 29.7°C, 0.8°C cooler than Porto-Novo, with 37 mm of rain.
Among the 8 cities listed in Benin, Porto-Novo ranks 5th of 8 for the warmest December highs and joint 7th of 8 for the driest December (rainfall, lowest first). The mean December high of those 8 cities is 31.8°C; Porto-Novo is 1.3°C cooler than that mean.
From December to January, average highs rise by 0.4°C to 30.8°C, and monthly rainfall falls from 37 mm to 29 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
Porto-Novo climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 30.8°C24.4°C | 24.4°C | 29 | 8.4 | 11.812 h |
| February | 31.2°C25.5°C | 25.5°C | 40 | 11.2 | 11.912 h |
| March | 31.0°C26.1°C | 26.1°C | 73 | 17.5 | 12.112 h |
| April | 30.6°C25.9°C | 25.9°C | 98 | 18.9 | 12.312 h |
| May | 29.6°C25.2°C | 25.2°C | 171 | 24.9 | 12.412 h |
| June | 28.0°C24.1°C | 24.1°C | 229 | 26.2 | 12.512 h |
| July | 27.1°C23.5°C | 23.5°C | 140 | 21.4 | 12.512 h |
| August | 26.8°C23.1°C | 23.1°C | 98 | 16.2 | 12.312 h |
| September | 27.5°C23.5°C | 23.5°C | 144 | 22.2 | 12.212 h |
| October | 28.6°C24.1°C | 24.1°C | 155 | 25.4 | 12.012 h |
| November | 29.7°C24.9°C | 24.9°C | 75 | 18.6 | 11.812 h |
| December, selected | 30.5°C24.7°C | 24.7°C | 37 | 10.4 | 11.812 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
- Ekpé in DecemberBenin · 14 kmHigh 29.7°C · Low 25.5°C · 37 mm rain
- Cotonou in DecemberBenin · 25 kmHigh 29.3°C · Low 25.6°C · 27 mm rain
- Godomè in DecemberBenin · 31 kmHigh 29.7°C · Low 25.5°C · 33 mm rain
- Irewe in DecemberNigeria · 60 kmHigh 29.6°C · Low 25.1°C · 32 mm rain
- Alasia in DecemberNigeria · 63 kmHigh 30.0°C · Low 24.7°C · 32 mm rain
- Ota in DecemberNigeria · 73 kmHigh 31.7°C · Low 23.4°C · 31 mm rain
- Ifo in DecemberNigeria · 74 kmHigh 32.1°C · Low 23.1°C · 31 mm rain
- Ajegunle in DecemberNigeria · 81 kmHigh 30.3°C · Low 24.8°C · 32 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 Porto-Novo) is explained once on the Porto-Novo year overview and on the Sources, method and limits page.
Ekpé lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.