Climate averages 1991–2020

Iwo 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.

Average high 32.9°C Daytime mean, December
Average low 22.5°C Night-time mean, December
Rainfall 5.7 mm 2 days with ≥1 mm
Daylight 12 h Sunrise to sunset, per day
Every month in Iwo · average highYear overview

December is a hot month in Iwo: daytime highs average 32.9°C and nights cool to about 22.5°C. By daytime temperature it is the 4th warmest of the 12 months.

Expect about 5.7 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 41 min on an average December day.

The nearest other city in this atlas is Lalupon (23 km away). In December its highs average 33.0°C, about as warm as Iwo, with 7.0 mm of rain.

Among the 143 cities listed in Nigeria, Iwo ranks joint 59th of 143 for the warmest December highs and joint 72nd of 143 for the driest December (rainfall, lowest first). The mean December high of those 143 cities is 32.4°C; Iwo is 0.6°C warmer than that mean.

From December to January, average highs rise by 1.3°C to 34.3°C, and monthly rainfall rises from 5.7 mm to 8.8 mm.

The annual picture

December in context

30-year average
Average highAverage low°C
Average daily high and low temperatures by month The same values are available in the monthly table below. Lines show mean daily maxima and minima, not a forecast interval. 152025303540 JanFebMarAprMayJunJulAugSepOctNovDec

Monthly rainfall

Average total · mm
Average monthly rainfall totalsEach bar is a mean monthly total over 1991–2020. Full numbers are in the table. JanFebMarAprMayJunJulAugSepOctNovDec 2000

Averages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated

Every month, side by side

Iwo climate table

1991–2020
Monthly climate averages for Iwo, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 34.3°C22.4°C22.4°C8.82.211.712 h
February 34.9°C23.6°C23.6°C204.611.912 h
March 33.6°C24.4°C24.4°C5312.112.112 h
April 31.9°C24.2°C24.2°C7615.412.312 h
May 30.3°C23.7°C23.7°C12420.812.512 h
June 28.6°C22.8°C22.8°C15725.112.613 h
July 27.6°C22.0°C22.0°C16226.012.513 h
August 27.4°C21.7°C21.7°C16423.812.412 h
September 28.1°C22.1°C22.1°C17425.812.212 h
October 29.1°C22.5°C22.5°C12822.912.012 h
November 30.9°C23.2°C23.2°C256.111.812 h
December, selected 32.9°C22.5°C22.5°C5.71.511.712 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

Distance from Iwo

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 limits

How these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Iwo) is explained once on the Iwo year overview and on the Sources, method and limits page.

Inisa lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.