Last updated: June 24, 2025
In New Haven, United States, the average temperature in August hovers around 25°C (77°F), making it a delightful time to visit. You can expect temperatures to range from a cool 13°C (55°F) to a scorching 36°C (97°F). However, be prepared for some wet days, as the area receives about 104 mm (4.1 in) of precipitation spread over 12 days. With an average humidity of 74%, the atmosphere can feel quite muggy, so pack accordingly!
In August in New Haven, the average temperature is 25°C (77°F). Maximum can reach 36°C (97°F) and minimum can be as low as 13°C (55°F). Overall, it's a pleasant time to visit New Haven, perfect for enjoying outdoor activities while being prepared for varying temperatures.
In New Haven in August, the total precipitation amount is 104 mm (4.1 in) spread over 12 days.
In New Haven in August humidity is 74%. With an average temperature of 25°C (77°F), this humidity feels like a warm, muggy blanket wrapping around you, making travel a bit more challenging as you find yourself sticky and in need of frequent breaks to hydrate and cool down.
In New Haven in August, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in New Haven.
UV Risk Categories
Weather in New Haven varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in New Haven, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 3°C (37°F) | 96 mm (3.8 inches) | 87% | moderate |
| February Weather | 5°C (41°F) | 150 mm (5.9 inches) | 86% | moderate |
| March Weather | 9°C (49°F) | 135 mm (5.3 inches) | 86% | high |
| April Weather | 14°C (57°F) | 144 mm (5.7 inches) | 82% | very high |
| May Weather | 20°C (68°F) | 119 mm (4.7 inches) | 82% | very high |
| June Weather | 24°C (75°F) | 157 mm (6.2 inches) | 83% | extreme |
| July Weather | 26°C (79°F) | 115 mm (4.5 inches) | 80% | extreme |
| August Weather | 25°C (77°F) | 104 mm (4.1 inches) | 74% | very high |
| September Weather | 22°C (72°F) | 125 mm (4.9 inches) | 71% | very high |
| October Weather | 16°C (61°F) | 108 mm (4.2 inches) | 78% | high |
| November Weather | 8°C (46°F) | 89 mm (3.5 inches) | 88% | moderate |
| December Weather | 6°C (42°F) | 121 mm (4.8 inches) | 88% | moderate |