March Weather in Portsmouth

Last updated: March 2, 2024

The weather in Portsmouth, United States, during March is characterized by an average temperature of 10°C (51°F). Highs can soar to 27°C (80°F), while lows may dip to -3°C (26°F). Typically, the humidity level in Portsmouth throughout March hovers around 82%.

-3°C (26°F)

Minimum temperature

10°C (51°F)

Average temperature

27°C (80°F)

Maximum temperature

82%

Humidity

Precipitation and Sunshine hours

In March, Portsmouth averages 79 mm (3.1 inches) of rainfall, typically over the course of 10 rainy days. The month enjoys an average of 11 hours 59 minutes of daylight, with the sun shining for approximately 8 hours 21 minutes each day. Additionally, there is a 42% probability of sunny days during this period.

79 mm (3.1 inches)

Precipitation

10 rainy days

Rainy days

8 hours 21 minutes

Sunshine hours

42%

Chance of sun

UV Index

In March, the UV Index in Portsmouth reaches a maximum of 8, 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.

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
  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 3 5 6 7 8 7 6 4 2 1 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

Compare Portsmouth's Climate with Cities Worldwide