Climate Insights for Deniliquin

The climate in Deniliquin is temperate. The average annual temperature is 17°C and approximately 409mm of precipitation falls per year. December is the wettest month, receiving around 49mm of rainfall. Deniliquin 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, February, December. The coldest months are June, August, July, when temperatures can drop to 5°C.

Temperatures in Deniliquin vary considerably across the year, with a 29°C difference between the coldest and warmest months. The warmest month is January, when average highs reach 34°C and the mean temperature sits around 26°C. June is the coolest month, with minimum temperatures around 5°C and an average of 9°C. On average, daily temperatures fluctuate by about 13°C between overnight lows and afternoon highs. The sharpest temperature change occurs between April and May, with a 5°C shift in average temperatures.

Deniliquin is a relatively dry area, receiving approximately 409mm of precipitation annually, which averages out to around 34mm per month. The wettest month is December, averaging 49mm of rainfall. September and August also tend to see above-average precipitation. The driest month is February, with just 14mm. That's 35mm less than December, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall.

Deniliquin 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 November, averaging 4km/h, though still comfortable for most outdoor activities. The calmest conditions occur in June, with average winds dropping to 3km/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.

It is currently winter in Deniliquin, which began on June 21, 2026. Deniliquin 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 34°C, while the coldest stretch bottoms out in June near 5°C. Spring is next, beginning on September 23, 2026 — 89 days from now.

The best time to visit Deniliquin is during February, March, April, October, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 21°C with modest rainfall averaging 33mm per month. By contrast, January can be uncomfortably hot with highs reaching 34°C, while June is the coldest period with lows dropping to 5°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 Deniliquin 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.