Climate averages 1991–2020
Meru weather
in December.
A warm, moderately wet month: the 10th warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a warm month in Meru: daytime highs average 22.7°C and nights cool to about 13.9°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 55 mm of rain on roughly 13 days, which makes December a moderately wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 07 min on an average December day.
The nearest other city in this atlas is Isiolo (35 km away). In December its highs average 26.7°C, 4.0°C warmer than Meru, with 55 mm of rain.
Among the 37 cities listed in Kenya, Meru ranks 30th of 37 for the warmest December highs and joint 14th of 37 for the driest December (rainfall, lowest first). The mean December high of those 37 cities is 26.0°C; Meru is 3.3°C cooler than that mean.
From December to January, average highs rise by 1.4°C to 24.1°C, and monthly rainfall falls from 55 mm to 39 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
Meru climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 24.1°C13.9°C | 13.9°C | 39 | 7.5 | 12.112 h |
| February | 25.5°C14.4°C | 14.4°C | 20 | 4.8 | 12.112 h |
| March | 25.5°C15.1°C | 15.1°C | 42 | 8.8 | 12.112 h |
| April | 24.2°C15.9°C | 15.9°C | 84 | 13.8 | 12.112 h |
| May | 23.7°C15.6°C | 15.6°C | 37 | 7.3 | 12.112 h |
| June | 22.9°C14.4°C | 14.4°C | 13 | 2.8 | 12.112 h |
| July | 22.4°C13.6°C | 13.6°C | 10 | 1.8 | 12.112 h |
| August | 23.0°C13.6°C | 13.6°C | 11 | 2.2 | 12.112 h |
| September | 24.6°C14.2°C | 14.2°C | 10 | 2.1 | 12.112 h |
| October | 24.6°C15.1°C | 15.1°C | 43 | 9.2 | 12.112 h |
| November | 22.1°C14.7°C | 14.7°C | 112 | 20.6 | 12.112 h |
| December, selected | 22.7°C13.9°C | 13.9°C | 55 | 13.2 | 12.112 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
- Isiolo in DecemberKenya · 35 kmHigh 26.7°C · Low 16.6°C · 55 mm rain
- Nanyuki in DecemberKenya · 65 kmHigh 21.4°C · Low 11.9°C · 62 mm rain
- Nyeri in DecemberKenya · 94 kmHigh 21.1°C · Low 11.5°C · 181 mm rain
- Karuri (Murang'A), Kenya in DecemberKenya · 98 kmHigh 24.4°C · Low 14.2°C · 55 mm rain
- Thika in DecemberKenya · 137 kmHigh 23.5°C · Low 14.4°C · 72 mm rain
- Ruiru in DecemberKenya · 154 kmHigh 23.5°C · Low 14.0°C · 57 mm rain
- Mwala in DecemberKenya · 157 kmHigh 24.7°C · Low 16.7°C · 80 mm rain
- Naivasha in DecemberKenya · 160 kmHigh 22.3°C · Low 13.1°C · 119 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 Meru) is explained once on the Meru year overview and on the Sources, method and limits page.