Climate Insights for Masterton

The climate in Masterton is temperate. The average annual temperature is 13°C and approximately 1036mm of precipitation falls per year. Masterton receives a notable amount of rainfall throughout the year, including during its driest month. Masterton 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: February, January, December. The coldest months are July, August, June, when temperatures can drop to 6°C.

Masterton sees moderate temperature variation throughout the year, ranging from 6°C to 21°C. February is the warmest month, though highs remain moderate at 21°C with a mean of 17°C. July is the coolest month, with minimum temperatures around 6°C and an average of 8°C. Daily temperature variation is modest, with an average difference of 6°C between highs and lows. The sharpest temperature change occurs between March and April, with a 2°C shift in average temperatures.

Masterton is a moderately rainy area, receiving approximately 1036mm of precipitation annually, which averages out to around 86mm per month. The wettest month is December, averaging 112mm of rainfall. November and July also tend to see above-average precipitation. The driest month is January, with just 68mm. That's 44mm 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.

Masterton is mildly breezy, with an average annual wind speed of 16km/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 19km/h, though still comfortable for most outdoor activities. The calmest conditions occur in April, with average winds dropping to 14km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 5km/h between the calmest and windiest months.

It is currently winter in Masterton, which began on June 21, 2026. Masterton 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 February at around 21°C, while the coldest stretch bottoms out in July near 6°C. Spring is next, beginning on September 23, 2026 (7 days from now).

The best time to visit Masterton is during January, February and March, when the weather is most comfortable for travellers. During these months, average temperatures hover around 16°C with modest rainfall averaging 75mm per month. By contrast, July can be quite cold with temperatures dropping to 6°C. Despite being the best months overall, some rain is still likely. Pack a waterproof layer and plan a mix of indoor and outdoor activities.

The table below shows monthly climate averages for Masterton 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.