Climate Insights for Njombe

The climate in Njombe is temperate. The average annual temperature is 17°C and approximately 1760mm of precipitation falls per year. January is the wettest month, receiving around 442mm 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 8°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 8°C and an average of 13°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs.

Njombe is a fairly wet location, receiving approximately 1760mm of precipitation annually, which averages out to around 147mm per month. The wettest month is January, averaging 442mm of rainfall. March and February also tend to see above-average precipitation. The driest month is September, with just 3mm. That's 439mm 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 mildly breezy, with an average annual wind speed of 13km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is October, averaging 16km/h, though still comfortable for most outdoor activities. The calmest conditions occur in February, with average winds dropping to 10km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 6km/h gap between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 14km/h in winter, 15km/h in spring, 10km/h in summer, 12km/h in autumn.

It is currently autumn in Njombe, which began on March 20, 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 8°C. Winter is next, beginning on June 21, 2026 — 89 days from now.

The best time to visit Njombe is during May, 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 38mm per month. By contrast, July can be quite cold with temperatures dropping to 8°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

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.