Last updated: March 2, 2024
The weather in Greenwich, United States, during August is characterized by an average temperature of 22°C (72°F). Highs can soar to 31°C (88°F), while lows may dip to 11°C (52°F). Typically, the humidity level in Greenwich throughout August hovers around 78%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In August, Greenwich averages 91 mm (3.6 inches) of rainfall, typically over the course of 13 rainy days. The month enjoys an average of 13 hours 43 minutes of daylight, with the sun shining for approximately 10 hours 37 minutes each day. Additionally, there is a 46% probability of sunny days during this period.
Precipitation
Rainy days
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Chance of sun
In August, the UV Index in Greenwich reaches a maximum of 9, indicating a level of VeryHigh exposure. The most intense UV radiation typically occurs between 13:00 and 15:00, during which unprotected skin may burn in as little as 15 minutes.
| 07:00 | 08:00 | 09:00 | 10:00 | 11:00 | 12:00 | 13:00 | 14:00 | 15:00 | 16:00 | 17:00 | 18:00 | 19:00 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UVI | 1 | 1 | 2 | 4 | 6 | 8 | 9 | 9 | 8 | 6 | 4 | 2 | 1 |
| Exposure | Low | Moderate | High | VeryHigh | High | Moderate | Low | ||||||
| Time to burn | 45 min | 30 min | 25 min | 15 min | 25 min | 30 min | 45 min | ||||||