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The climate of Nyeri is influenced by altitude, and it's pleasantly warm during the day and cool, or even a little chilly, at night. There is a warmer period from January to March and a cooler period from June to August.
The city is located on the Kenyan plateau, at 1,800 meters (5,900 feet) above sea level, between two mountainous areas, the Aberdare mountains to the west and Mount Kenya to the east.
We are in the area of Kenya where there are two rainy periods, corresponding with the two passages of the sun at the zenith. The rainiest months are April, May, October and November.
Nyeri - Climate data
In Nyeri, the
average temperature of the coldest month (July) is of 16.3 °C (61.3 °F), that of the warmest month (April) is of 19.4 °C (66.9 °F). Here are the average temperatures.
Nyeri - Average temperatures (1991-2020) | Month | Min (°C) | Max (°C) | Mean (°C) | Min (°F) | Max (°F) | Mean (°F) |
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| January | 10.8 | 25.3 | 18 | 51 | 78 | 64.5 |
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| February | 10.9 | 26.6 | 18.8 | 52 | 80 | 65.8 |
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| March | 12.6 | 26.2 | 19.4 | 55 | 79 | 66.9 |
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| April | 14.2 | 24.6 | 19.4 | 58 | 76 | 66.9 |
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| May | 14.3 | 23 | 18.7 | 58 | 73 | 65.6 |
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| June | 13.2 | 21.5 | 17.3 | 56 | 71 | 63.2 |
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| July | 12.2 | 20.3 | 16.3 | 54 | 69 | 61.3 |
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| August | 12.2 | 20.7 | 16.5 | 54 | 69 | 61.7 |
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| September | 12.6 | 23.3 | 18 | 55 | 74 | 64.3 |
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| October | 13.8 | 24.2 | 19 | 57 | 76 | 66.2 |
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| November | 13.2 | 23.3 | 18.3 | 56 | 74 | 64.9 |
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| December | 11.5 | 24 | 17.7 | 53 | 75 | 63.9 |
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| Year | 12.6 | 23.6 | 18.05 | 54.7 | 74.4 | 64.5 |
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In Nyeri,
precipitation amounts to 1160 millimeters (45.7 inches) per year: it is therefore quite abundant. It ranges from 45 mm (1.8 in) in the driest month (September) to 210 mm (8.3 in) in the wettest one (April). Here is the average precipitation.
Nyeri - Average precipitation| Month | Millimeters | Inches | Days |
|---|
| January | 55 | 2.2 | 9 |
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| February | 55 | 2.2 | 9 |
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| March | 80 | 3.1 | 12 |
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| April | 210 | 8.3 | 20 |
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| May | 205 | 8.1 | 19 |
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| June | 50 | 2 | 10 |
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| July | 55 | 2.2 | 12 |
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| August | 50 | 2 | 13 |
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| September | 45 | 1.8 | 9 |
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| October | 135 | 5.3 | 14 |
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| November | 145 | 5.7 | 20 |
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| December | 80 | 3.1 | 14 |
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| Year | 1160 | 45.7 | 162 |
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Nyeri - Weather by month
Based on the period 1991-2020
In
January, the weather in Nyeri is usually very mild. However, there are remarkable differences between night and day. The average temperature is of 18.0 °C (64 °F), with a minimum of 10.8 °C (51.4 °F) and a maximum of 25.3 °C (77.6 °F).
On the coldest nights of the month, the temperature usually drops to around 7 °C (44.5 °F).
On the warmest days of the month, the temperature usually reaches around 28 °C (82.5 °F).
Precipitation amounts to 55 mm (2.2 in), distributed over 9 days.
The day lasts on average 12 hours and 5 minutes.
The average humidity is 71%. Hence, the air is normally humid.
The average wind speed is 8 kph (5 mph).
In
February, the weather in Nyeri is usually warm. However, there are remarkable differences between night and day. The average temperature is of 18.8 °C (66 °F), with a minimum of 10.9 °C (51.6 °F) and a maximum of 26.6 °C (79.9 °F).
On the coldest nights of the month, the temperature usually drops to around 7 °C (45 °F).
On the warmest days of the month, the temperature usually reaches around 30 °C (86 °F).
Precipitation amounts to 55 mm (2.2 in), distributed over 9 days.
The day lasts on average 12 hours and 5 minutes.
The average humidity is 66%.
The average wind speed is 8 kph (5 mph).
In
March, the weather in Nyeri is usually warm. However, there are remarkable differences between night and day. The average temperature is of 19.4 °C (67 °F), with a minimum of 12.6 °C (54.7 °F) and a maximum of 26.2 °C (79.1 °F).
On the coldest nights, the temperature usually drops to around 8.5 °C (47 °F).
On the warmest days, the temperature usually reaches around 29 °C (84.5 °F).
Precipitation amounts to 80 mm (3.1 in), distributed over 12 days.
The day lasts on average 12 hours and 5 minutes.
The average humidity is 69%.
The average wind speed is 9 kph (5 mph).
In
April, the warmest month of the year, the weather in Nyeri is usually warm. The average temperature is of 19.4 °C (67 °F), with a minimum of 14.2 °C (57.6 °F) and a maximum of 24.6 °C (76.2 °F).
On the coldest nights, the temperature usually drops to around 10.5 °C (51 °F).
On the warmest days, the temperature usually reaches around 28 °C (82 °F).
Precipitation amounts to 210 mm (8.3 in), distributed over 20 days.
The day lasts on average 12 hours and 5 minutes.
The average humidity is 78%. Hence, the air is normally humid.
The average wind speed is 8 kph (5 mph).
In
May, the weather in Nyeri is usually warm. The average temperature is of 18.7 °C (66 °F), with a minimum of 14.3 °C (57.8 °F) and a maximum of 23 °C (73.4 °F).
On the coldest nights, the temperature usually drops to around 11 °C (52 °F).
On the warmest days, the temperature usually reaches around 25.5 °C (78 °F).
Precipitation amounts to 205 mm (8.1 in), distributed over 19 days.
The day lasts on average 12 hours and 5 minutes.
The average humidity is 82%. Hence, the air is normally humid.
The average wind speed is 8 kph (5 mph).
In
June, the weather in Nyeri is usually very mild. The average temperature is of 17.3 °C (63 °F), with a minimum of 13.2 °C (55.7 °F) and a maximum of 21.5 °C (70.7 °F).
On the coldest nights, the temperature usually drops to around 9.5 °C (49 °F).
On the warmest days, the temperature usually reaches around 25.5 °C (78 °F).
Precipitation amounts to 50 mm (2 in), distributed over 10 days.
The day lasts on average 12 hours and 5 minutes.
The average humidity is 82%. Hence, the air is normally humid.
The average wind speed is 8 kph (5 mph).
In
July, the coldest month of the year, the weather in Nyeri is usually very mild. The average temperature is of 16.3 °C (61 °F), with a minimum of 12.2 °C (54 °F) and a maximum of 20.3 °C (68.6 °F).
On the coldest nights of the month, the temperature usually drops to around 8.5 °C (47.5 °F).
On the warmest days of the month, the temperature usually reaches around 25 °C (77 °F).
Precipitation amounts to 55 mm (2.2 in), distributed over 12 days.
The day lasts on average 12 hours and 5 minutes.
The average humidity is 83%. Hence, the air is normally humid.
The average wind speed is 8 kph (5 mph).
In
August, the weather in Nyeri is usually very mild. The average temperature is of 16.5 °C (62 °F), with a minimum of 12.2 °C (54 °F) and a maximum of 20.7 °C (69.3 °F).
On the coldest nights of the month, the temperature usually drops to around 8.5 °C (47 °F).
On the warmest days of the month, the temperature usually reaches around 25 °C (77 °F).
Precipitation amounts to 50 mm (2 in), distributed over 13 days.
The day lasts on average 12 hours and 5 minutes.
The average humidity is 80%. Hence, the air is normally humid.
The average wind speed is 9 kph (5 mph).
In
September, the weather in Nyeri is usually very mild. The average temperature is of 18.0 °C (64 °F), with a minimum of 12.6 °C (54.6 °F) and a maximum of 23.3 °C (74 °F).
On the coldest nights, the temperature usually drops to around 9 °C (48 °F).
On the warmest days, the temperature usually reaches around 27 °C (81 °F).
Precipitation amounts to 45 mm (1.8 in), distributed over 9 days.
The day lasts on average 12 hours and 5 minutes.
The average humidity is 72%. Hence, the air is normally humid.
The average wind speed is 10 kph (6 mph).
In
October, the weather in Nyeri is usually warm. The average temperature is of 19.0 °C (66 °F), with a minimum of 13.8 °C (56.8 °F) and a maximum of 24.2 °C (75.6 °F).
On the coldest nights, the temperature usually drops to around 10.5 °C (51 °F).
On the warmest days, the temperature usually reaches around 27.5 °C (81.5 °F).
Precipitation amounts to 135 mm (5.3 in), distributed over 14 days.
The day lasts on average 12 hours and 5 minutes.
The average humidity is 73%. Hence, the air is normally humid.
The average wind speed is 9 kph (6 mph).
In
November, the weather in Nyeri is usually warm. The average temperature is of 18.3 °C (65 °F), with a minimum of 13.2 °C (55.8 °F) and a maximum of 23.3 °C (74 °F).
On the coldest nights, the temperature usually drops to around 10 °C (50 °F).
On the warmest days, the temperature usually reaches around 26.5 °C (80 °F).
Precipitation amounts to 145 mm (5.7 in), distributed over 20 days.
The day lasts on average 12 hours and 5 minutes.
The average humidity is 81%. Hence, the air is normally humid.
The average wind speed is 7 kph (5 mph).
In
December, the weather in Nyeri is usually very mild. The average temperature is of 17.7 °C (64 °F), with a minimum of 11.5 °C (52.7 °F) and a maximum of 24 °C (75.2 °F).
On the coldest nights of the month, the temperature usually drops to around 7.5 °C (45.5 °F).
On the warmest days of the month, the temperature usually reaches around 27 °C (80.5 °F).
Precipitation amounts to 80 mm (3.1 in), distributed over 14 days.
The day lasts on average 12 hours and 5 minutes.
The average humidity is 77%. Hence, the air is normally humid.
The average wind speed is 8 kph (5 mph).