Climate Insights for Semarang
Kota Semarang, Semarang Selatan, Central Java, Indonesia
Climate Overview
The climate in Semarang is hot. The average annual temperature is 28°C and approximately 2,534 mm of precipitation falls per year. Semarang receives a notable amount of rainfall throughout the year, including during its driest month. Semarang sits near the equator, so seasonal temperature differences are minimal throughout the year.The climate in Semarang is hot. The average annual temperature is 82°F and approximately 99.8 in of precipitation falls per year. Semarang receives a notable amount of rainfall throughout the year, including during its driest month. Semarang sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Semarang sees moderate temperature variation throughout the year, ranging from 23°C to 34°C. The warmest month is September, when average highs reach 34°C and the mean temperature sits around 28°C. July is the coolest month, with minimum temperatures around 23°C and an average of 28°C. Daily temperature variation is modest, with an average difference of 8°C between highs and lows.Semarang has relatively stable temperatures year-round, staying within a 18°F range. The warmest month is September, when average highs reach 92°F and the mean temperature sits around 83°F. July is the coolest month, with minimum temperatures around 74°F and an average of 82°F. Daily temperature variation is modest, with an average difference of 14°F between highs and lows.
Precipitation
Semarang is a very wet location, receiving approximately 2,534 mm of precipitation annually, which averages out to around 211 mm per month. The wettest month is January, averaging 403 mm of rainfall. February and December also tend to see above-average precipitation. The driest month is August, with just 33 mm. That's 370 mm 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.Semarang is a very wet location, receiving approximately 99.8 in of precipitation annually, which averages out to around 8.3 in per month. The wettest month is January, averaging 15.9 in of rainfall. February and December also tend to see above-average precipitation. The driest month is August, with just 1.3 in. That's 14.6 in 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.
Wind
Semarang is relatively calm, with an average annual wind speed of 6km/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 8km/h, though still comfortable for most outdoor activities. The calmest conditions occur in November, with average winds dropping to 4km/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.Semarang is relatively calm, with an average annual wind speed of 4mph. For context, sustained winds below 7mph are generally light, while anything above 16mph is considered strong. The windiest month is February, averaging 5mph, though still comfortable for most outdoor activities. The calmest conditions occur in November, with average winds dropping to 3mph, 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.
Monthly Climate Data
The table below shows monthly climate averages for Semarang 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 Semarang 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.