Climate Overview
The climate in Gbarnga is hot. The average annual temperature is 26°C and approximately 1627mm of precipitation falls per year. September is the wettest month, receiving around 354mm of rainfall. Gbarnga sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Gbarnga sees moderate temperature variation throughout the year, ranging from 22°C to 34°C. The warmest month is February, when average highs reach 34°C and the mean temperature sits around 28°C. December is the coolest month, with minimum temperatures around 22°C and an average of 26°C. Daily temperature variation is modest, with an average difference of 8°C between highs and lows.
Precipitation
Gbarnga is a fairly wet location, receiving approximately 1627mm of precipitation annually, which averages out to around 136mm per month. The wettest month is September, averaging 354mm of rainfall. August and June also tend to see above-average precipitation. The driest month is January, with just 16mm. That's 339mm less than September, 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.
Wind
Gbarnga is relatively calm, with an average annual wind speed of 11km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 13km/h, though still comfortable for most outdoor activities. The calmest conditions occur in November, with average winds dropping to 9km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 4km/h gap between the calmest and windiest months.
Seasons
89 days until Summer
It is currently spring in Gbarnga, which began on March 20, 2026. Gbarnga sits near the equator, so the traditional four-season cycle is less pronounced — temperatures remain relatively stable year-round. The warmest period peaks in February at around 34°C, while the coldest stretch bottoms out in December near 22°C. Summer is next, beginning on June 21, 2026 — 89 days from now.
Spring
Temperatures range from 23 to 33°C. Rainfall is heavy, totalling around 352mm across the season with a monthly average of 117mm. Winds are generally light, averaging 12km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 22 to 29°C. Rainfall is heavy, totalling around 621mm across the season with a monthly average of 207mm. Winds are generally light, averaging 12km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 23 to 31°C. Rainfall is heavy, totalling around 586mm across the season with a monthly average of 195mm. Winds are generally light, averaging 10km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 22 to 34°C. Rainfall is relatively light, with around 68mm over the season and a monthly average of 23mm. Winds are generally light, averaging 12km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.
Monthly Climate Data
The table below shows monthly climate averages for Gbarnga 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.
