Climate Overview
The climate in Sitiawan is hot. The average annual temperature is 27°C and approximately 179mm of precipitation falls per year. April is the wettest month, receiving around 33mm of rainfall. Sitiawan sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Sitiawan has relatively stable temperatures year-round, staying within a 4°C range. The warmest month is January, when average highs reach 29°C and the mean temperature sits around 29°C. December is the coolest month, with minimum temperatures around 25°C and an average of 25°C. Daily temperature variation is modest, with an average difference of 1°C between highs and lows.
Precipitation
Sitiawan is a quite dry location, receiving approximately 179mm of precipitation annually, which averages out to around 15mm per month. The wettest month is February, averaging 33mm of rainfall. March and April also tend to see above-average precipitation. The driest month is August, with just 1mm. That's 32mm less than February, 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
Sitiawan 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 December, averaging 6km/h, though still comfortable for most outdoor activities. The calmest conditions occur in January, with average winds dropping to 2km/h, making it an ideal period for wind-sensitive activities. Wind speeds vary significantly across the year, with a 4km/h difference between the calmest and windiest months. This level of variation is worth factoring into travel plans.
Seasons
16 days until Autumn
It is currently summer in Sitiawan, which began on June 21, 2026. Sitiawan sits near the equator, so the traditional four-season cycle is less pronounced — temperatures remain relatively stable year-round. The warmest period peaks in January at around 29°C, while the coldest stretch bottoms out in December near 25°C. Autumn is next, beginning on September 23, 2026 — 16 days from now.
Spring
Temperatures range from 26 to 28°C. Rainfall is relatively light, with around 84mm over the season and a monthly average of 28mm. Winds are generally light, averaging 3km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.
Summer
Temperatures range from 25 to 27°C. Precipitation is minimal, with only around 28mm for the entire season. Winds are generally light, averaging 5km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 25 to 27°C. Precipitation is minimal, with only around 19mm for the entire season. Winds are generally light, averaging 5km/h. Layered clothing works best as temperatures gradually cool — enjoy the crisp air and changing scenery.
Winter
Temperatures range from 25 to 29°C. Rainfall is relatively light, with around 48mm over the season and a monthly average of 16mm. Winds are generally light, averaging 4km/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 Sitiawan 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.
