Portsmouth weather in March 2025

Expect 84°F daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Portsmouth in March. Check more long-term weather averages for Portsmouth in March before you book your next holiday to Dominica in 2025/2026.

  • 84°F maximum daytime temperature in March in Portsmouth84
    84°F max day temperature
  • 8 hours of sunshine per day
  • 15 days with some rainfall in March in Portsmouth15
    15 days with some rainfall
  • 70°F minimum night-time temperature in March in Portsmouth70
    70°F min night temperature
  • 12 hours of daylight per day in March in Portsmouth12
    12 hours of daylight per day
  • Moderate heat & humidity in March in PortsmouthM
    Moderate heat & humidity
  • 4.3 inches monthly rainfall in March in Portsmouth4.3
    4.3 inches of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in March in Portsmouth11
    11+ (Extreme) UV index
  • 79°F sea temperature in March in Portsmouth79
    79°F sea temperature

More about Portsmouth

Portsmouth by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Dominica

Marella Cruises: up to 5% off ocean cruises

  • Book online & save up to 5% on Marella Cruises
  • Discount varies by season. Book online with TUI
  • Destinations across the Med, Caribbean & USA
Go to Marella Cruises deal >>

View all Marella Cruises offers

Marella CruisesCruise deal finder

The March weather guide for Dominica (Portsmouth) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C)  |  Imperial (°F)

Back to top

How hot is it in Portsmouth in March?

Daytime temperatures usually reach 84°F in Portsmouth in March with moderate heat and humidity, falling to 70°F at night.

How sunny is it in Portsmouth in March?

There are normally 8 hours of bright sunshine each day in Portsmouth in March - that's 62% of daylight hours.

How warm is the sea around Portsmouth in March?

The average sea temperature around Portsmouth in March is 79°F.

Does it rain in Portsmouth in March?

There are usually 15 days with some rain in Portsmouth in March and the average monthly rainfall is 4.3 inches.

Portsmouth March sunrise & sunset times

Browse the sunrise and sunset times for Portsmouth in March 2025. Select a month to view Portsmouth sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Saturday, 1st March 2025 06:23 18:13
Sunday, 16th March 2025 06:13 18:16
Monday, 31st March 2025 06:02 18:18

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^