Climate Overview
The climate in Porto Nacional Airport is hot. The average annual temperature is 27°C and approximately 1466mm of precipitation falls per year. January is the wettest month, receiving around 282mm of rainfall. Porto Nacional Airport is in the Southern Hemisphere. The seasons are reversed — summer runs from December to February, while winter falls between June and August. The summer months are: September, August, October. The coldest months are July, June, August, when temperatures can drop to 20°C.
Temperature
Porto Nacional Airport sees moderate temperature variation throughout the year, ranging from 20°C to 37°C. September is the hottest month, with daytime highs reaching 37°C and an average of 30°C. July is the coolest month, with minimum temperatures around 20°C and an average of 26°C. On average, daily temperatures fluctuate by about 11°C between overnight lows and afternoon highs.
Precipitation
Porto Nacional Airport is a fairly wet location, receiving approximately 1466mm of precipitation annually, which averages out to around 122mm per month. The wettest month is January, averaging 282mm of rainfall. February and March also tend to see above-average precipitation. The driest month is July, with just 0mm. That's 282mm less than January, 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
Porto Nacional Airport is relatively calm, with an average annual wind speed of 11km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is August, averaging 15km/h, though still comfortable for most outdoor activities. The calmest conditions occur in March, with average winds dropping to 8km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 7km/h gap between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 14km/h in winter, 11km/h in spring, 8km/h in summer, 9km/h in autumn.
Seasons
87 days until Winter
It is currently autumn in Porto Nacional Airport, which began on March 20, 2026. Porto Nacional Airport is in the Southern Hemisphere, where the seasons are reversed — spring starts in September, summer in December, autumn in March, and winter in June. The warmest period peaks in September at around 37°C, while the coldest stretch bottoms out in July near 20°C. Winter is next, beginning on June 21, 2026 — 87 days from now.
Spring
Temperatures range from 23 to 37°C. Rainfall is heavy, totalling around 314mm across the season with a monthly average of 105mm. Winds are generally light, averaging 11km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 23 to 31°C. Rainfall is heavy, totalling around 773mm across the season with a monthly average of 258mm. Winds are generally light, averaging 8km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 22 to 33°C. Rainfall is heavy, totalling around 374mm across the season with a monthly average of 125mm. Winds are generally light, averaging 9km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 20 to 36°C. Precipitation is minimal, with only around 6mm for the entire season. Winds are generally light, averaging 14km/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 Porto Nacional Airport 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.
