Last updated: June 24, 2025
In Portsmouth Heights, United States, the average temperature in May is a pleasant 20°C (69°F). This month can bring a variety of weather, with minimum temperatures dipping to 5°C (41°F) and maximums soaring to 35°C (96°F). Expect about 121 mm (4.7 in) of precipitation over 11 days, accompanied by an average humidity of 80%, creating a mild yet humid atmosphere.
In May in Portsmouth Heights, the average temperature is 20°C (69°F), with maximums reaching 35°C (96°F) and minimums dropping to as low as 5°C (41°F). This makes it an ideal time for travelers to enjoy a mix of warm days and cooler evenings while exploring the region.
In Portsmouth Heights in May, the total precipitation amount reaches 121 mm (4.7 in) over a span of 11 days.
In Portsmouth Heights in May, humidity is 80%. With an average temperature of 20°C (69°F), this humidity feels like a warm blanket enveloping you, making every step slightly more challenging as you navigate the air that clings to your skin, often leaving you longing for a cool breeze while exploring the sights.
In Portsmouth Heights in May, 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 Portsmouth Heights.
UV Risk Categories
Weather in Portsmouth Heights varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Portsmouth Heights, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 6°C (43°F) | 90 mm (3.5 inches) | 84% | moderate |
| February Weather | 8°C (47°F) | 99 mm (3.9 inches) | 83% | high |
| March Weather | 10°C (51°F) | 79 mm (3.1 inches) | 82% | very high |
| April Weather | 16°C (60°F) | 97 mm (3.8 inches) | 81% | very high |
| May Weather | 20°C (69°F) | 121 mm (4.7 inches) | 80% | very high |
| June Weather | 24°C (76°F) | 121 mm (4.8 inches) | 82% | very high |
| July Weather | 27°C (81°F) | 142 mm (5.6 inches) | 81% | extreme |
| August Weather | 26°C (79°F) | 169 mm (6.6 inches) | 81% | very high |
| September Weather | 24°C (75°F) | 127 mm (5.0 inches) | 78% | very high |
| October Weather | 19°C (66°F) | 91 mm (3.6 inches) | 80% | very high |
| November Weather | 11°C (53°F) | 78 mm (3.1 inches) | 84% | moderate |
| December Weather | 8°C (47°F) | 89 mm (3.5 inches) | 84% | moderate |