Climate averages 1991–2020
Meru weather
by month.
See how the year changes. February (tied with March) has the highest average daily maximum; September (tied with July) has the lowest average monthly rainfall.
Pleasant-weather months by our simple rule: JanuaryFebruaryMayJuneJulyAugustSeptember
Long-term climate patterns, not a forecast for a particular trip.
Across the year Meru averages a daytime high of 23.8°C and a nighttime low of 14.5°C, with about 478 mm of rain on roughly 94 days. February (tied with March) is the warmest month (average high 25.5°C) and November the coolest (22.1°C). November is the wettest month with 112 mm; September (tied with July) is the driest with 10 mm.
Months with pleasant weather by a simple rule (average high between 18°C and 29°C, average low of at least 5°C and at most 8 rain days): January, February, May, June, July, August and September. This looks at temperature and rain only, not humidity, wind, sea temperature or crowds.
The annual picture
A year in Meru
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 | 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
Nearby cities
- IsioloKenya · 35 kmHigh 28.2°C · Low 17.5°C · 570 mm rain a year
- NanyukiKenya · 65 kmHigh 21.7°C · Low 12.4°C · 1,226 mm rain a year
- NyeriKenya · 94 kmHigh 21.0°C · Low 11.8°C · 1,465 mm rain a year
- Karuri (Murang'A), KenyaKenya · 98 kmHigh 24.7°C · Low 14.7°C · 897 mm rain a year
- ThikaKenya · 137 kmHigh 24.1°C · Low 14.4°C · 914 mm rain a year
- RuiruKenya · 154 kmHigh 24.0°C · Low 14.0°C · 585 mm rain a year
- MwalaKenya · 157 kmHigh 25.4°C · Low 16.2°C · 564 mm rain a year
- NaivashaKenya · 160 kmHigh 21.8°C · Low 12.9°C · 1,151 mm rain a year
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 limitsWhat do the high and low temperatures mean?
We average the daily maximum and daily minimum for each calendar month over 1991–2020. They are not record extremes, a forecast range or temperatures at a fixed time of day.
How is a rain day counted?
A local calendar day (standard time, UTC+3, no daylight saving) with at least 1 mm of total precipitation counts as one rain day. We count these for each year and month, then average across 30 years. The average does not predict which days will be wet.
Where do the numbers come from?
ERA5-Land (temperature) and ERA5 (precipitation) reanalysis from the Copernicus Climate Change Service, read from the Open-Meteo open-data archive. Temperature comes from the 0.1° model cell at 0.00°, 37.70° (7 km from the city centre), adjusted down by 1.7°C for the difference between the city's elevation (1,579 m) and the cell's (1,323 m). Rain comes from the 0.25° cell at 0.00°, 37.75°. These are model estimates, not weather-station readings; coast, hills and city streets can differ.
Does this page show sunshine, humidity or sea temperature?
No. The data used here contain air temperature and precipitation only. Daylight hours are calculated from the city's latitude (sunrise to sunset), not measured sunshine.