Climate Insights for Arlington

The climate in Arlington is temperate. The average annual temperature is 16°C and approximately 754mm of precipitation falls per year. December is the wettest month, receiving around 131mm of rainfall. Arlington 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: January, December, February. The coldest months are July, June, August, when temperatures can drop to 1°C.

Temperatures in Arlington vary considerably across the year, with a 27°C difference between the coldest and warmest months. The warmest month is January, when average highs reach 28°C and the mean temperature sits around 22°C. July is the coolest month, with minimum temperatures around 1°C and an average of 9°C. On average, daily temperatures fluctuate by about 15°C between overnight lows and afternoon highs. The sharpest temperature change occurs between August and September, with a 4°C shift in average temperatures.

Arlington is a relatively dry area, receiving approximately 754mm of precipitation annually, which averages out to around 63mm per month. The wettest month is December, averaging 131mm of rainfall. January and February also tend to see above-average precipitation. The driest month is July, with just 8mm. That's 123mm less than December, 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.

Arlington is relatively calm, 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 October, averaging 13km/h, though still comfortable for most outdoor activities. The calmest conditions occur in May, with average winds dropping to 10km/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 winter in Arlington, which began on June 21, 2026. Arlington 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 January at around 28°C, while the coldest stretch bottoms out in July near 1°C. Spring is next, beginning on September 23, 2026 (7 days from now).

The best time to visit Arlington is during March, April, September and October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 18°C with modest rainfall averaging 60mm per month. By contrast, January can be uncomfortably hot with highs reaching 28°C, while July is the coldest period with lows dropping to 1°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

The table below shows monthly climate averages for Arlington 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.