Climate Overview
The climate in Sungai Sumun is hot. The average annual temperature is 27°C and approximately 2950mm of precipitation falls per year. Sungai Sumun receives a notable amount of rainfall throughout the year, including during its driest month. Sungai Sumun sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Sungai Sumun has relatively stable temperatures year-round, staying within a 4°C range. The warmest month is May, when average highs reach 30°C and the mean temperature sits around 28°C. January 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 3°C between highs and lows.
Precipitation
Sungai Sumun is a very wet location, receiving approximately 2950mm of precipitation annually, which averages out to around 246mm per month. The wettest month is November, averaging 404mm of rainfall. December and October also tend to see above-average precipitation. The driest month is February, with just 145mm. That's 259mm 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
Sungai Sumun is mildly breezy, with an average annual wind speed of 14km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is July, averaging 16km/h, though still comfortable for most outdoor activities. The calmest conditions occur in January, with average winds dropping to 13km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 3km/h between the calmest and windiest months.
Seasons
89 days until Summer
It is currently spring in Sungai Sumun, which began on March 20, 2026. Sungai Sumun 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 30°C, while the coldest stretch bottoms out in January near 26°C. Summer is next, beginning on June 21, 2026 — 89 days from now.
Spring
Temperatures range from 26 to 30°C. Rainfall is heavy, totalling around 763mm across the season with a monthly average of 254mm. Winds are generally light, averaging 15km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 26 to 29°C. Rainfall is heavy, totalling around 577mm across the season with a monthly average of 192mm. Winds are moderate at around 15km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 26 to 29°C. Rainfall is heavy, totalling around 937mm across the season with a monthly average of 312mm. Winds are generally light, averaging 14km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 26 to 29°C. Rainfall is heavy, totalling around 673mm across the season with a monthly average of 224mm. Winds are generally light, averaging 13km/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 Sungai Sumun 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.
