Climate averages 1991–2020
Oyan weather
in December.
A hot, very dry month: the 4th warmest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a hot month in Oyan: daytime highs average 33.2°C and nights cool to about 21.0°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 6.1 mm of rain on roughly 2 days, which makes December a very dry month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 11 h 40 min on an average December day.
The nearest other city in this atlas is Offa (12 km away). In December its highs average 33.0°C, about as warm as Oyan, with 1.9 mm of rain.
Among the 143 cities listed in Nigeria, Oyan ranks joint 39th of 143 for the warmest December highs and joint 81st of 143 for the driest December (rainfall, lowest first). The mean December high of those 143 cities is 32.4°C; Oyan is 0.9°C warmer than that mean.
From December to January, average highs rise by 0.5°C to 33.8°C, and monthly rainfall rises from 6.1 mm to 11 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
Oyan climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 33.8°C20.8°C | 20.8°C | 11 | 2.1 | 11.712 h |
| February | 34.8°C22.2°C | 22.2°C | 24 | 4.7 | 11.912 h |
| March | 34.2°C23.3°C | 23.3°C | 66 | 13.1 | 12.112 h |
| April | 32.6°C23.3°C | 23.3°C | 104 | 17.6 | 12.312 h |
| May | 30.7°C22.9°C | 22.9°C | 164 | 22.9 | 12.512 h |
| June | 28.8°C22.0°C | 22.0°C | 202 | 25.9 | 12.613 h |
| July | 27.4°C21.3°C | 21.3°C | 200 | 27.2 | 12.513 h |
| August | 27.1°C21.0°C | 21.0°C | 197 | 25.3 | 12.412 h |
| September | 28.1°C21.3°C | 21.3°C | 264 | 27.3 | 12.212 h |
| October | 29.6°C21.6°C | 21.6°C | 220 | 25.2 | 12.012 h |
| November | 31.9°C22.0°C | 22.0°C | 40 | 6.7 | 11.812 h |
| December, selected | 33.2°C21.0°C | 21.0°C | 6.1 | 1.5 | 11.712 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
- Offa in DecemberNigeria · 12 kmHigh 33.0°C · Low 20.9°C · 1.9 mm rain
- Ila Orangun in DecemberNigeria · 16 kmHigh 33.2°C · Low 20.7°C · 4.4 mm rain
- Ikirun in DecemberNigeria · 19 kmHigh 33.2°C · Low 21.3°C · 6.1 mm rain
- Oke Mesi in DecemberNigeria · 31 kmHigh 32.5°C · Low 20.5°C · 6.0 mm rain
- Osogbo in DecemberNigeria · 39 kmHigh 33.3°C · Low 21.6°C · 6.2 mm rain
- Ilobu in DecemberNigeria · 39 kmHigh 33.3°C · Low 21.6°C · 6.2 mm rain
- Ipoti in DecemberNigeria · 39 kmHigh 32.8°C · Low 20.1°C · 6.0 mm rain
- Ijero-Ekiti in DecemberNigeria · 42 kmHigh 33.2°C · Low 20.6°C · 6.0 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 Oyan) is explained once on the Oyan year overview and on the Sources, method and limits page.
Ikirun lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.