Last updated: June 24, 2025
In Greenwich, United States, the average temperature in August is a comfortable 22°C (72°F). During this month, you can expect temperatures to range from a brisk 8°C (47°F) to a warm 32°C (91°F). Be prepared for some wet days, as 91 mm (3.6 in) of precipitation usually falls over 13 days. With an average humidity of 78%, it's a great time to enjoy the lush, vibrant atmosphere!
In August in Greenwich, the average temperature is 22°C (72°F). The maximum can reach 32°C (91°F) and the minimum can be as low as 8°C (47°F). This pleasant climate makes Greenwich an ideal destination for travelers seeking comfortable weather and outdoor adventures.
In Greenwich in August, the precipitation amount is 91 mm (3.6 in) spread over 13 days.
In Greenwich in August, humidity is 78%. With an average temperature of 22°C (72°F), this humidity feels like a warm blanket wrapped around you, making outdoor exploration a bit stifling but ultimately rewarding as you bask in the vibrant atmosphere.
In Greenwich in August, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check 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 August’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 |