Climate Insights for Blenheim

The climate in Blenheim is temperate. The average annual temperature is 10°C and approximately 1,004 mm of precipitation falls per year. Blenheim receives a notable amount of rainfall throughout the year, including during its driest month. Blenheim is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, June. The coldest months are January, February, December, when temperatures can drop to -4°C. Snowfall occurs from January to December, with around 98cm accumulating over the season.The climate in Blenheim is temperate. The average annual temperature is 50°F and approximately 39.5 in of precipitation falls per year. Blenheim receives a notable amount of rainfall throughout the year, including during its driest month. Blenheim is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, June. The coldest months are January, February, December, when temperatures can drop to 26°F. Snowfall occurs from January to December, with around 39in accumulating over the season.

Temperatures in Blenheim vary considerably across the year, with a 29°C difference between the coldest and warmest months. The warmest month is July, when average highs reach 25°C and the mean temperature sits around 23°C. The coldest month is January, when overnight lows fall to -4°C and the daily average is -2°C. Daily temperature variation is modest, with an average difference of 5°C between highs and lows. The sharpest temperature change occurs between October and November, with a 7°C shift in average temperatures.Temperatures in Blenheim vary considerably across the year, with a 52°F difference between the coldest and warmest months. The warmest month is July, when average highs reach 78°F and the mean temperature sits around 73°F. The coldest month is January, when overnight lows fall to 26°F and the daily average is 29°F. Daily temperature variation is modest, with an average difference of 8°F between highs and lows. The sharpest temperature change occurs between October and November, with a 13°F shift in average temperatures.

Blenheim is a moderately rainy area, receiving approximately 1,004 mm of precipitation annually, which averages out to around 84 mm per month. The wettest month is April, averaging 99 mm of rainfall. October and May also tend to see above-average precipitation. The driest month is September, with just 62 mm. That's 37 mm less than April, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Snowfall is a regular feature from January to December, with around 98cm accumulating over the season. February typically sees the most snow at around 27cm.Blenheim is a moderately rainy area, receiving approximately 39.5 in of precipitation annually, which averages out to around 3.3 in per month. The wettest month is April, averaging 3.9 in of rainfall. October and May also tend to see above-average precipitation. The driest month is September, with just 2.4 in. That's 1.5 in less than April, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Snowfall is a regular feature from January to December, with around 39in accumulating over the season. February typically sees the most snow at around 11in.

Blenheim is mildly breezy, with an average annual wind speed of 19km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is December, averaging 23km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in July, with average winds dropping to 14km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 9km/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 23km/h in winter, 19km/h in spring, 15km/h in summer, 20km/h in autumn.Blenheim is very windy, with an average annual wind speed of 12mph. For context, sustained winds below 7mph are generally light, while anything above 16mph is considered strong. The windiest month is December, averaging 14mph, which can feel quite blustery and may affect outdoor activities. The calmest conditions occur in July, with average winds dropping to 9mph, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 5mph 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 14mph in winter, 12mph in spring, 9mph in summer, 13mph in autumn.

The best time to visit Blenheim is during 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 76 mm per month. By contrast, January can be quite cold with temperatures dropping to -4°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 best time to visit Blenheim is during June, July, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 70°F with modest rainfall averaging 3 in per month. By contrast, January can be quite cold with temperatures dropping to 26°F. 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 Blenheim 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. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. 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.The table below shows monthly climate averages for Blenheim based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Fahrenheit (°F). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in inches (in) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in miles per hour (mph). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.