Climate Overview
The climate in Kotabaru Gusti Sjamsir Alam Airport is hot. The average annual temperature is 27°C and approximately 2947mm of precipitation falls per year. Kotabaru Gusti Sjamsir Alam Airport receives a notable amount of rainfall throughout the year, including during its driest month. Kotabaru Gusti Sjamsir Alam Airport sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Kotabaru Gusti Sjamsir Alam Airport has relatively stable temperatures year-round, staying within a 5°C range. The warmest month is November, when average highs reach 30°C and the mean temperature sits around 28°C. August is the coolest month, with minimum temperatures around 25°C and an average of 27°C. Daily temperature variation is modest, with an average difference of 4°C between highs and lows.
Precipitation
Kotabaru Gusti Sjamsir Alam Airport is a very wet location, receiving approximately 2947mm of precipitation annually, which averages out to around 246mm per month. The wettest month is March, averaging 351mm of rainfall. February and April also tend to see above-average precipitation. The driest month is August, with just 130mm. That's 222mm less than March, the wettest month. Precipitation varies noticeably between seasons, with the first half (January to June) of the year generally seeing more rainfall.
Wind
Kotabaru Gusti Sjamsir Alam Airport is mildly breezy, with an average annual wind speed of 12km/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 16km/h, though still comfortable for most outdoor activities. The calmest conditions occur in April, 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, 13km/h in spring, 12km/h in summer, 11km/h in autumn.
Seasons
89 days until Winter
It is currently autumn in Kotabaru Gusti Sjamsir Alam Airport, which began on March 20, 2026. Kotabaru Gusti Sjamsir Alam Airport 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 30°C, while the coldest stretch bottoms out in August near 25°C. Winter is next, beginning on June 21, 2026 — 89 days from now.
Spring
Temperatures range from 26 to 30°C. Rainfall is heavy, totalling around 595mm across the season with a monthly average of 198mm. Winds are generally light, averaging 13km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 26 to 30°C. Rainfall is heavy, totalling around 866mm across the season with a monthly average of 289mm. Winds are generally light, averaging 12km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 26 to 30°C. Rainfall is heavy, totalling around 902mm across the season with a monthly average of 301mm. Winds are generally light, averaging 11km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 25 to 29°C. Rainfall is heavy, totalling around 584mm across the season with a monthly average of 195mm. Winds are generally light, averaging 14km/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 Kotabaru Gusti Sjamsir Alam Airport 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.
