Climate Overview
The climate in Sisa is warm and mild. The average annual temperature is 22°C and approximately 1650mm of precipitation falls per year. Sisa receives a notable amount of rainfall throughout the year, including during its driest month. Sisa sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Sisa sees moderate temperature variation throughout the year, ranging from 16°C to 29°C. The warmest month is September, when average highs reach 29°C and the mean temperature sits around 23°C. July is the coolest month, with minimum temperatures around 16°C and an average of 21°C. On average, daily temperatures fluctuate by about 10°C between overnight lows and afternoon highs.
Precipitation
Sisa is a fairly wet location, receiving approximately 1650mm of precipitation annually, which averages out to around 138mm per month. The wettest month is March, averaging 238mm of rainfall. February and January also tend to see above-average precipitation. The driest month is August, with just 54mm. That's 184mm 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
Sisa is relatively calm, with an average annual wind speed of 7km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is September, averaging 7km/h, though still comfortable for most outdoor activities. The calmest conditions occur in March, with average winds dropping to 6km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 1km/h between the calmest and windiest months.
Seasons
89 days until Winter
It is currently autumn in Sisa, which began on March 20, 2026. Sisa sits near the equator, so the traditional four-season cycle is less pronounced — temperatures remain relatively stable year-round. The warmest period peaks in September at around 29°C, while the coldest stretch bottoms out in July near 16°C. Winter is next, beginning on June 21, 2026 — 89 days from now.
Spring
Temperatures range from 17 to 29°C. Rainfall is heavy, totalling around 380mm across the season with a monthly average of 127mm. Winds are generally light, averaging 7km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 19 to 28°C. Rainfall is heavy, totalling around 525mm across the season with a monthly average of 175mm. Winds are generally light, averaging 7km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 18 to 27°C. Rainfall is heavy, totalling around 543mm across the season with a monthly average of 181mm. Winds are generally light, averaging 6km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 16 to 28°C. Precipitation is moderate at around 202mm for the season, averaging 67mm per month. Winds are generally light, averaging 7km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.
Best Time to Visit
The best time to visit Sisa is during June, July, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 22°C with modest rainfall averaging 68mm per month. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.
Monthly Climate Data
The table below shows monthly climate averages for Sisa 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.
