Last updated: June 24, 2025
In August, the average temperature in New Haven, United States is a pleasant 23°C (74°F). Visitors can expect a comfortable range, with minimums dropping to 9°C (48°F) and maximums peaking at 35°C (95°F). However, be prepared for some rain, as 96 mm (3.8 in) of precipitation may fall over 11 days, contributing to an average humidity of 79%.
In August in New Haven, the average temperature is 23°C (74°F). Maximums can reach 35°C (95°F), and minimums can be as low as 9°C (48°F). This makes New Haven a great destination for travelers seeking a comfortable climate to explore outdoor activities and enjoy the local scenery.
In New Haven in August, the precipitation amount is 96 mm (3.8 in) spread over 11 days, resulting in a significant accumulation of rainfall.
In New Haven in August, humidity is 79%. With an average temperature of 23°C (74°F), this humidity feels like a warm, enveloping blanket that can make outdoor activities a bit less comfortable, urging travelers to seek shade and hydration throughout the day.
In New Haven 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 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 | -2°C (29°F) | 74 mm (2.9 inches) | 85% | moderate |
| February Weather | -1°C (31°F) | 80 mm (3.2 inches) | 85% | moderate |
| March Weather | 5°C (41°F) | 102 mm (4.0 inches) | 86% | high |
| April Weather | 10°C (50°F) | 92 mm (3.6 inches) | 87% | very high |
| May Weather | 17°C (63°F) | 127 mm (5.0 inches) | 81% | very high |
| June Weather | 22°C (72°F) | 121 mm (4.8 inches) | 82% | very high |
| July Weather | 24°C (76°F) | 104 mm (4.1 inches) | 81% | very high |
| August Weather | 23°C (74°F) | 96 mm (3.8 inches) | 79% | very high |
| September Weather | 20°C (68°F) | 65 mm (2.5 inches) | 78% | very high |
| October Weather | 14°C (57°F) | 101 mm (4.0 inches) | 81% | high |
| November Weather | 5°C (41°F) | 82 mm (3.2 inches) | 89% | moderate |
| December Weather | 1°C (35°F) | 61 mm (2.4 inches) | 86% | low |