Climate Overview
The climate in Simunjan is hot. The average annual temperature is 27°C and approximately 3388mm of precipitation falls per year. Simunjan receives a notable amount of rainfall throughout the year, including during its driest month. Simunjan sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Simunjan has relatively stable temperatures year-round, staying within a 8°C range. The warmest month is May, when average highs reach 32°C and the mean temperature sits around 27°C. February is the coolest month, with minimum temperatures around 24°C and an average of 26°C. Daily temperature variation is modest, with an average difference of 8°C between highs and lows.
Precipitation
Simunjan is a very wet location, receiving approximately 3388mm of precipitation annually, which averages out to around 282mm per month. The wettest month is December, averaging 364mm of rainfall. November and January also tend to see above-average precipitation. The driest month is July, with just 163mm. That's 201mm less than December, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around.
Wind
Simunjan 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 February, averaging 9km/h, though still comfortable for most outdoor activities. The calmest conditions occur in May, with average winds dropping to 7km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 2km/h between the calmest and windiest months.
Seasons
89 days until Summer
It is currently spring in Simunjan, which began on March 20, 2026. Simunjan 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 32°C, while the coldest stretch bottoms out in February near 24°C. Summer is next, beginning on June 21, 2026 — 89 days from now.
Spring
Temperatures range from 24 to 32°C. Rainfall is heavy, totalling around 878mm across the season with a monthly average of 293mm. Winds are generally light, averaging 7km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 24 to 32°C. Rainfall is heavy, totalling around 613mm across the season with a monthly average of 204mm. Winds are generally light, averaging 8km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 24 to 32°C. Rainfall is heavy, totalling around 905mm across the season with a monthly average of 302mm. Winds are generally light, averaging 8km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 24 to 31°C. Rainfall is heavy, totalling around 992mm across the season with a monthly average of 331mm. Winds are generally light, averaging 9km/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 Simunjan 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.
