Climate Overview
The climate in Tulagi is hot. The average annual temperature is 27°C and approximately 3983mm of precipitation falls per year. Tulagi receives a notable amount of rainfall throughout the year, including during its driest month. Tulagi sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Tulagi has relatively stable temperatures year-round, staying within a 2°C range. The warmest month is January, when average highs reach 28°C and the mean temperature sits around 27°C. August 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 2°C between highs and lows.
Precipitation
Tulagi is a very wet location, receiving approximately 3983mm of precipitation annually, which averages out to around 332mm per month. The wettest month is December, averaging 425mm of rainfall. February and March also tend to see above-average precipitation. The driest month is August, with just 239mm. That's 186mm 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
Tulagi 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 July, averaging 6km/h, though still comfortable for most outdoor activities. The calmest conditions occur in December, with average winds dropping to 3km/h, making it an ideal period for wind-sensitive activities. Wind speeds vary significantly across the year, with a 3km/h difference between the calmest and windiest months. This level of variation is worth factoring into travel plans.
Seasons
93 days until Spring
It is currently winter in Tulagi, which began on June 21, 2026. Tulagi 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 28°C, while the coldest stretch bottoms out in August near 26°C. Spring is next, beginning on September 23, 2026 — 93 days from now.
Spring
Temperatures range from 26 to 28°C. Rainfall is heavy, totalling around 951mm across the season with a monthly average of 317mm. Winds are generally light, averaging 4km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 26 to 28°C. Rainfall is heavy, totalling around 1230mm across the season with a monthly average of 410mm. Winds are generally light, averaging 4km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 26 to 28°C. Rainfall is heavy, totalling around 1053mm across the season with a monthly average of 351mm. Winds are generally light, averaging 4km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 26 to 28°C. Rainfall is heavy, totalling around 750mm across the season with a monthly average of 250mm. Winds are generally light, averaging 6km/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 Tulagi 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.
