Climate Insights for Greenwich

The climate in Greenwich is temperate. The average annual temperature is 11°C and approximately 693 mm of precipitation falls per year. Greenwich receives a notable amount of rainfall throughout the year, including during its driest month. Greenwich 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 2°C. Light snow can occur between January and December.The climate in Greenwich is temperate. The average annual temperature is 53°F and approximately 27.3 in of precipitation falls per year. Greenwich receives a notable amount of rainfall throughout the year, including during its driest month. Greenwich 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 36°F. Light snow can occur between January and December.

Temperatures in Greenwich vary considerably across the year, with a 21°C difference between the coldest and warmest months. July is the warmest month, though highs remain moderate at 23°C with a mean of 18°C. January is the coolest month, with minimum temperatures around 2°C and an average of 5°C. Daily temperature variation is modest, with an average difference of 7°C between highs and lows. The sharpest temperature change occurs between October and November, with a 4°C shift in average temperatures.Temperatures in Greenwich vary considerably across the year, with a 37°F difference between the coldest and warmest months. July is the warmest month, though highs remain moderate at 73°F with a mean of 65°F. January is the coolest month, with minimum temperatures around 36°F and an average of 41°F. Daily temperature variation is modest, with an average difference of 13°F between highs and lows. The sharpest temperature change occurs between October and November, with a 7°F shift in average temperatures.

Greenwich is a relatively dry area, receiving approximately 693 mm of precipitation annually, which averages out to around 58 mm per month. The wettest month is October, averaging 70 mm of rainfall. December and June also tend to see above-average precipitation. The driest month is April, with just 44 mm. That's 26 mm less than October, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Light snowfall can occur between January and December, totalling around 10cm annually. January is the snowiest month with approximately 3cm.Greenwich is a relatively dry area, receiving approximately 27.3 in of precipitation annually, which averages out to around 2.3 in per month. The wettest month is October, averaging 2.8 in of rainfall. December and June also tend to see above-average precipitation. The driest month is April, with just 1.7 in. That's 1 in less than October, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Light snowfall can occur between January and December, totalling around 4in annually. January is the snowiest month with approximately 1in.

Greenwich is mildly breezy, with an average annual wind speed of 14km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 17km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 13km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 4km/h 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 16km/h in winter, 14km/h in spring, 13km/h in summer, 14km/h in autumn.Greenwich is moderately windy, with an average annual wind speed of 9mph. For context, sustained winds below 7mph are generally light, while anything above 16mph is considered strong. The windiest month is February, averaging 11mph, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in July, with average winds dropping to 8mph, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 3mph 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 10mph in winter, 9mph in spring, 8mph in summer, 9mph in autumn.

The best time to visit Greenwich is during June, July, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 17°C with modest rainfall averaging 58 mm per month. By contrast, January can be quite cold with temperatures dropping to 2°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.The best time to visit Greenwich is during June, July, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 63°F with modest rainfall averaging 2.3 in per month. By contrast, January can be quite cold with temperatures dropping to 36°F. 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 Greenwich 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 Greenwich 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.