Climate - Arusha (Tanzania)

The climate of Arusha is subtropical, tempered by altitude, with a warmer period from October to March and a cooler period from June to August.
The city is located in the north-east of Tanzania, at 1,350 meters (4,430 feet) above sea level, and at the foot of Mount Meru, beyond which lies Kilimanjaro.
We are in the area of Tanzania where there are two rainy seasons, a more intense one from March to May and a less intense one from October to December.

The average temperature of the coldest month (July) is of 18.0 °C (64.4 °F), that of the warmest month (March) is of 22.4 °C (72.4 °F). Here are the average temperatures.
Precipitation amounts to 1125 millimeters (44.3 inches) per year: it is therefore quite abundant. It ranges from 15 mm (0.6 in) in the driest months (August, September) to 340 mm (13.4 in) in the wettest one (April). Here is the average precipitation.
On average, there are around 2780 sunshine hours per year. Here are the average sunshine hours per day.

Arusha - Weather by month

Based on the period 1991-2020
(January - February - March - April - May - June - July - August - September - October - November - December)

In January, the average temperature is of 21.8 °C (71 °F), with a minimum of 15.6 °C (60.1 °F) and a maximum of 28 °C (82.5 °F).
On the coldest nights of the month, the temperature usually drops to around 12 °C (54 °F).
On the warmest days of the month, the temperature usually reaches around 31 °C (88 °F).
Precipitation amounts to 65 mm (2.6 in), distributed over 12 days.
On average, there are 275 hours of sunshine per month, i.e. 9 hours per day.
The average humidity is 67%.
The average wind speed is 11 kph (7 kph).

In February, the average temperature is of 22.1 °C (72 °F), with a minimum of 15.9 °C (60.6 °F) and a maximum of 28.4 °C (83 °F).
On the coldest nights of the month, the temperature usually drops to around 12.5 °C (54.5 °F).
On the warmest days of the month, the temperature usually reaches around 31.5 °C (88.5 °F).
Precipitation amounts to 65 mm (2.6 in), distributed over 12 days.
On average, there are 245 hours of sunshine per month, i.e. 9 hours per day.
The average humidity is 67%.
The average wind speed is 11 kph (7 kph).

In March, the warmest month of the year, the average temperature is of 22.4 °C (72 °F), with a minimum of 17.1 °C (62.7 °F) and a maximum of 27.8 °C (82.1 °F).
On the coldest nights of the month, the temperature usually drops to around 13 °C (55.5 °F).
On the warmest days of the month, the temperature usually reaches around 31.5 °C (88.5 °F).
Precipitation amounts to 145 mm (5.7 in), distributed over 15 days.
On average, there are 250 hours of sunshine per month, i.e. 8 hours per day.
The average humidity is 70%.
The average wind speed is 13 kph (8 kph).

In April, the average temperature is of 21.2 °C (70 °F), with a minimum of 17.3 °C (63.1 °F) and a maximum of 25 °C (77 °F).
On the coldest nights of the month, the temperature usually drops to around 14.5 °C (58 °F).
On the warmest days of the month, the temperature usually reaches around 28 °C (83 °F).
Precipitation amounts to 340 mm (13.4 in), distributed over 21 days.
On average, there are 195 hours of sunshine per month, i.e. 6.5 hours per day.
The average humidity is 81%.
The average wind speed is 15 kph (10 kph).

In May, the average temperature is of 19.7 °C (68 °F), with a minimum of 16.4 °C (61.5 °F) and a maximum of 23.1 °C (73.5 °F).
On the coldest nights of the month, the temperature usually drops to around 13.5 °C (56 °F).
On the warmest days of the month, the temperature usually reaches around 26.5 °C (79.5 °F).
Precipitation amounts to 170 mm (6.7 in), distributed over 14 days.
On average, there are 185 hours of sunshine per month, i.e. 6 hours per day.
The average humidity is 83%.
The average wind speed is 17 kph (11 kph).

In June, the average temperature is of 18.5 °C (65 °F), with a minimum of 14.7 °C (58.5 °F) and a maximum of 22.3 °C (72.1 °F).
On the coldest nights of the month, the temperature usually drops to around 11 °C (51.5 °F).
On the warmest days of the month, the temperature usually reaches around 25.5 °C (78 °F).
Precipitation amounts to 40 mm (1.6 in), distributed over 5 days.
On average, there are 185 hours of sunshine per month, i.e. 6 hours per day.
The average humidity is 78%.
The average wind speed is 17 kph (10 kph).

In July, the coldest month of the year, the average temperature is of 18.0 °C (64 °F), with a minimum of 13.9 °C (56.9 °F) and a maximum of 22.1 °C (71.8 °F).
On the coldest nights of the month, the temperature usually drops to around 9.5 °C (49 °F).
On the warmest days of the month, the temperature usually reaches around 25.5 °C (77.5 °F).
Precipitation amounts to 20 mm (0.8 in), distributed over 5 days.
On average, there are 205 hours of sunshine per month, i.e. 6.5 hours per day.
The average humidity is 74%.
The average wind speed is 18 kph (11 kph).

In August, the average temperature is of 18.7 °C (66 °F), with a minimum of 14.3 °C (57.7 °F) and a maximum of 23.2 °C (73.7 °F).
On the coldest nights of the month, the temperature usually drops to around 10.5 °C (51 °F).
On the warmest days of the month, the temperature usually reaches around 27 °C (80.5 °F).
Precipitation amounts to 15 mm (0.6 in), distributed over 4 days.
On average, there are 215 hours of sunshine per month, i.e. 7 hours per day.
The average humidity is 71%.
The average wind speed is 19 kph (12 kph).

In September, the average temperature is of 19.9 °C (68 °F), with a minimum of 14.7 °C (58.5 °F) and a maximum of 25.1 °C (77.1 °F).
On the coldest nights of the month, the temperature usually drops to around 10.5 °C (51.5 °F).
On the warmest days of the month, the temperature usually reaches around 28.5 °C (83 °F).
Precipitation amounts to 15 mm (0.6 in), distributed over 3 days.
On average, there are 245 hours of sunshine per month, i.e. 8 hours per day.
The average humidity is 66%.
The average wind speed is 20 kph (12 kph).

In October, the average temperature is of 21.3 °C (70 °F), with a minimum of 16 °C (60.8 °F) and a maximum of 26.7 °C (80 °F).
On the coldest nights of the month, the temperature usually drops to around 12.5 °C (55 °F).
On the warmest days of the month, the temperature usually reaches around 30 °C (86.5 °F).
Precipitation amounts to 40 mm (1.6 in), distributed over 6 days.
On average, there are 275 hours of sunshine per month, i.e. 9 hours per day.
The average humidity is 67%.
The average wind speed is 20 kph (12 kph).

In November, the average temperature is of 21.6 °C (71 °F), with a minimum of 16.4 °C (61.6 °F) and a maximum of 26.8 °C (80.3 °F).
On the coldest nights of the month, the temperature usually drops to around 13 °C (55.5 °F).
On the warmest days of the month, the temperature usually reaches around 30 °C (85.5 °F).
Precipitation amounts to 125 mm (4.9 in), distributed over 15 days.
On average, there are 245 hours of sunshine per month, i.e. 8 hours per day.
The average humidity is 73%.
The average wind speed is 15 kph (9 kph).

In December, the average temperature is of 21.3 °C (70 °F), with a minimum of 15.8 °C (60.5 °F) and a maximum of 26.8 °C (80.2 °F).
On the coldest nights of the month, the temperature usually drops to around 12.5 °C (55 °F).
On the warmest days of the month, the temperature usually reaches around 29.5 °C (85.5 °F).
Precipitation amounts to 90 mm (3.5 in), distributed over 15 days.
On average, there are 250 hours of sunshine per month, i.e. 8 hours per day.
The average humidity is 73%.
The average wind speed is 10 kph (6 kph).