Last updated: June 24, 2025
In April, the average temperature in Greenwich, United States hovers around 10°C (50°F), but be prepared for the extremes—temperatures can dip to a chilly -8°C (18°F) or soar to a warm 28°C (83°F). During this month, expect approximately 123 mm (4.8 in) of precipitation spread over 15 days, contributing to a notably high average humidity of 87%. Whether you pack for warmth or rain, make sure you're ready for anything!
In April in Greenwich, the average temperature is 10°C (50°F), with maximums reaching up to 28°C (83°F) and minimums dropping as low as -8°C (18°F). Be prepared for a diverse range of weather conditions if you plan to travel during this time.
In Greenwich in April, the precipitation amount is 123 mm (4.8 in), occurring over a span of 15 days.
In Greenwich in April humidity is 87%. With an average temperature of 10°C (50°F), this humidity feels like a heavy cloak wrapping around you, making every step feel laborious and the air thick with moisture, challenging your comfort while traveling.
In Greenwich in April, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Greenwich.
UV Risk Categories
Weather in Greenwich varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Greenwich, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | -2°C (29°F) | 78 mm (3.1 inches) | 88% | moderate |
February Weather | 0°C (32°F) | 92 mm (3.6 inches) | 87% | moderate |
March Weather | 4°C (40°F) | 97 mm (3.8 inches) | 87% | high |
April Weather | 10°C (50°F) | 123 mm (4.8 inches) | 87% | very high |
May Weather | 16°C (62°F) | 129 mm (5.1 inches) | 81% | very high |
June Weather | 21°C (71°F) | 136 mm (5.4 inches) | 82% | very high |
July Weather | 24°C (75°F) | 128 mm (5.0 inches) | 81% | very high |
August Weather | 22°C (72°F) | 91 mm (3.6 inches) | 78% | very high |
September Weather | 20°C (67°F) | 79 mm (3.1 inches) | 78% | very high |
October Weather | 14°C (57°F) | 96 mm (3.8 inches) | 82% | high |
November Weather | 5°C (41°F) | 88 mm (3.4 inches) | 89% | moderate |
December Weather | 1°C (35°F) | 84 mm (3.3 inches) | 86% | low |