Climate Overview
The climate in Tanjung Balai is hot. The average annual temperature is 27°C and approximately 2728mm of precipitation falls per year. Tanjung Balai receives a notable amount of rainfall throughout the year, including during its driest month. Tanjung Balai sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Tanjung Balai has relatively stable temperatures year-round, staying within a 3°C range. The warmest month is May, when average highs reach 29°C and the mean temperature sits around 28°C. November is the coolest month, with minimum temperatures around 26°C and an average of 27°C. Daily temperature variation is modest, with an average difference of 2°C between highs and lows.
Precipitation
Tanjung Balai is a very wet location, receiving approximately 2728mm of precipitation annually, which averages out to around 227mm per month. The wettest month is November, averaging 381mm of rainfall. December and April also tend to see above-average precipitation. The driest month is February, with just 148mm. That's 233mm less than November, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall.
Wind
Tanjung Balai is relatively calm, with an average annual wind speed of 4km/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 5km/h, though still comfortable for most outdoor activities. The calmest conditions occur in April, with average winds dropping to 3km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 2km/h gap between the calmest and windiest months.
Seasons
89 days until Autumn
It is currently summer in Tanjung Balai, which began on June 21, 2026. Tanjung Balai sits near the equator, so the traditional four-season cycle is less pronounced — temperatures remain relatively stable year-round. The warmest period peaks in May at around 29°C, while the coldest stretch bottoms out in November near 26°C. Autumn is next, beginning on September 23, 2026 — 89 days from now.
Spring
Temperatures range from 26 to 29°C. Rainfall is heavy, totalling around 686mm across the season with a monthly average of 229mm. Winds are generally light, averaging 3km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 27 to 29°C. Rainfall is heavy, totalling around 516mm across the season with a monthly average of 172mm. Winds are generally light, averaging 4km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 26 to 28°C. Rainfall is heavy, totalling around 821mm across the season with a monthly average of 274mm. Winds are generally light, averaging 3km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 26 to 28°C. Rainfall is heavy, totalling around 705mm across the season with a monthly average of 235mm. Winds are generally light, averaging 5km/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 Tanjung Balai 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.
