Climate Insights for Sunyani
Sunyani West District, Bono Region, Ghana
Climate Overview
The climate in Sunyani is hot. The average annual temperature is 27°C and approximately 960 mm of precipitation falls per year. September is the wettest month, receiving around 154 mm of rainfall. Sunyani sits near the equator, so seasonal temperature differences are minimal throughout the year.The climate in Sunyani is hot. The average annual temperature is 81°F and approximately 37.8 in of precipitation falls per year. September is the wettest month, receiving around 6 in of rainfall. Sunyani sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Sunyani sees moderate temperature variation throughout the year, ranging from 22°C to 36°C. February is the hottest month, with daytime highs reaching 36°C and an average of 30°C. December is the coolest month, with minimum temperatures around 22°C and an average of 27°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs.Sunyani sees moderate temperature variation throughout the year, ranging from 72°F to 97°F. February is the hottest month, with daytime highs reaching 97°F and an average of 86°F. December is the coolest month, with minimum temperatures around 72°F and an average of 81°F. On average, daily temperatures fluctuate by about 16°F between overnight lows and afternoon highs.
Precipitation
Sunyani is a moderately rainy area, receiving approximately 960 mm of precipitation annually, which averages out to around 80 mm per month. The wettest month is September, averaging 154 mm of rainfall. October and June also tend to see above-average precipitation. The driest month is January, with just 4 mm. That's 149 mm 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.Sunyani is a moderately rainy area, receiving approximately 37.8 in of precipitation annually, which averages out to around 3.1 in per month. The wettest month is September, averaging 6.1 in of rainfall. October and June also tend to see above-average precipitation. The driest month is January, with just 0.2 in. That's 5.9 in 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
Sunyani is relatively calm, with an average annual wind speed of 8km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is August, averaging 10km/h, though still comfortable for most outdoor activities. The calmest conditions occur in December, with average winds dropping to 6km/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. Wind tends to pick up during the summer months. The seasonal averages are 7km/h in winter, 9km/h in spring, 9km/h in summer, 6km/h in autumn.Sunyani is mildly breezy, with an average annual wind speed of 5mph. For context, sustained winds below 7mph are generally light, while anything above 16mph is considered strong. The windiest month is August, averaging 6mph, though still comfortable for most outdoor activities. The calmest conditions occur in December, with average winds dropping to 4mph, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 2mph gap between the calmest and windiest months. Wind tends to pick up during the summer months. The seasonal averages are 4mph in winter, 5mph in spring, 6mph in summer, 4mph in autumn.
Monthly Climate Data
The table below shows monthly climate averages for Sunyani 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.The table below shows monthly climate averages for Sunyani based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Fahrenheit (°F). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in miles per hour (mph). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.