Climate Insights for Arcos

The climate in Arcos is warm and mild. The average annual temperature is 22°C and approximately 1089mm of precipitation falls per year. January is the wettest month, receiving around 216mm of rainfall. Arcos 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, October, January. The coldest months are July, June, August, when temperatures can drop to 13°C.

Arcos sees moderate temperature variation throughout the year, ranging from 13°C to 31°C. The warmest month is September, when average highs reach 31°C and the mean temperature sits around 24°C. July is the coolest month, with minimum temperatures around 13°C and an average of 19°C. On average, daily temperatures fluctuate by about 10°C between overnight lows and afternoon highs. The sharpest temperature change occurs between August and September, with a 3°C shift in average temperatures.

Arcos is a moderately rainy area, receiving approximately 1089mm of precipitation annually, which averages out to around 91mm per month. The wettest month is January, averaging 216mm of rainfall. December and February also tend to see above-average precipitation. The driest month is July, with just 2mm. That's 214mm 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.

Arcos is mildly breezy, with an average annual wind speed of 12km/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 14km/h, though still comfortable for most outdoor activities. The calmest conditions occur in March, with average winds dropping to 11km/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.

It is currently autumn in Arcos, which began on March 20, 2026. Arcos 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 31°C, while the coldest stretch bottoms out in July near 13°C. Winter is next, beginning on June 21, 2026 — 89 days from now.

The best time to visit Arcos is during April, May, June, July, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 21°C with modest rainfall averaging 18mm per month. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

The table below shows monthly climate averages for Arcos 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.