Climate averages 1991–2020

Nyeri weather
in December.

A mild, very wet month: the 5th warmest and the 10th driest of the year.

Long-term climate patterns, not a forecast for a particular trip.

Average high 21.1°C Daytime mean, December
Average low 11.5°C Night-time mean, December
Rainfall 181 mm 22 days with ≥1 mm
Daylight 12 h Sunrise to sunset, per day
Every month in Nyeri · average highYear overview

December is a mild month in Nyeri: daytime highs average 21.1°C and nights cool to about 11.5°C. By daytime temperature it is the 5th warmest of the 12 months.

Expect about 181 mm of rain on roughly 22 days, which makes December a very wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 09 min on an average December day.

The nearest other city in this atlas is Karuri (Murang'A), Kenya (41 km away). In December its highs average 24.4°C, 3.2°C warmer than Nyeri, with 55 mm of rain.

Among the 37 cities listed in Kenya, Nyeri ranks joint 35th of 37 for the warmest December highs and 36th of 37 for the driest December (rainfall, lowest first). The mean December high of those 37 cities is 26.0°C; Nyeri is 4.9°C cooler than that mean.

From December to January, average highs rise by 1.4°C to 22.6°C, and monthly rainfall falls from 181 mm to 110 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. 51015202530 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 2500

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

Every month, side by side

Nyeri climate table

1991–2020
Monthly climate averages for Nyeri, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 22.6°C10.9°C10.9°C11014.512.112 h
February 23.8°C11.1°C11.1°C8512.112.112 h
March 23.5°C12.2°C12.2°C13318.412.112 h
April 21.5°C13.4°C13.4°C20625.412.112 h
May 20.5°C13.2°C13.2°C15822.212.112 h
June 19.6°C11.9°C11.9°C7716.612.112 h
July 18.6°C10.8°C10.8°C5114.112.112 h
August 18.9°C10.7°C10.7°C5715.412.112 h
September 20.4°C10.9°C10.9°C4611.912.112 h
October 20.9°C12.1°C12.1°C12918.712.112 h
November 20.2°C12.4°C12.4°C23026.412.112 h
December, selected 21.1°C11.5°C11.5°C18122.012.112 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 Nyeri

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 Nyeri) is explained once on the Nyeri year overview and on the Sources, method and limits page.