Climate Insights for Njombe

The climate in Njombe is temperate. The average annual temperature is 17°C and approximately 1350mm of precipitation falls per year. January is the wettest month, receiving around 323mm of rainfall. Njombe sits near the equator, so seasonal temperature differences are minimal throughout the year.

Njombe sees moderate temperature variation throughout the year, ranging from 10°C to 24°C. November is the warmest month, though highs remain moderate at 24°C with a mean of 19°C. July is the coolest month, with minimum temperatures around 10°C and an average of 14°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs.

Njombe is a fairly wet location, receiving approximately 1350mm of precipitation annually, which averages out to around 113mm per month. The wettest month is January, averaging 323mm of rainfall. March and February also tend to see above-average precipitation. The driest month is June, with just 4mm. That's 319mm less than January, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.

Njombe is relatively calm, with an average annual wind speed of 3km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is July, averaging 4km/h, though still comfortable for most outdoor activities. The calmest conditions occur in February, with average winds dropping to 2km/h, making it an ideal period for wind-sensitive activities. Wind speeds vary significantly across the year, with a 2km/h difference between the calmest and windiest months. This level of variation is worth factoring into travel plans.

It is currently winter in Njombe, which began on June 21, 2026. Njombe sits near the equator, so the traditional four-season cycle is less pronounced — temperatures remain relatively stable year-round. The warmest period peaks in November at around 24°C, while the coldest stretch bottoms out in July near 10°C. Spring is next, beginning on September 23, 2026 — 92 days from now.

The best time to visit Njombe is during May, August, September, October and November, when the weather is most comfortable for travellers. During these months, average temperatures hover around 17°C with modest rainfall averaging 27mm per month. By contrast, July can be quite cold with temperatures dropping to 10°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

The table below shows monthly climate averages for Njombe based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.