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Portsmouth Weather in June
Portsmouth in June sees high daytime temperatures of 29°C (84°F) and nighttime lows of 26°C (79°F). Rainfall is fairly high this month at around 70 mm (2.8 in), so pack a rain jacket to stay dry.
Rainfall in Portsmouth in June
Climate statistics over the past 30 years suggest around 18 days of rain, with 70 mm (2.8 in) average for the month. This is a month with many wet days but modest rainfall totals, so showers are generally light and easy to manage.
Temperature in Portsmouth in June
Portsmouth in June has excellent weather. Days reach 29°C (84°F) and nights cool to 26°C (79°F). Overall, the month follows a fairly predictable daily temperature pattern. With lows of 26°C (79°F), it stays warm throughout the night. A cold shower before going to sleep is one of the easiest ways to cool down before bed.
Sunshine in Portsmouth in June
Expect sunny days throughout the month, with an estimated 228 hours of sunshine. This makes it a pleasant time to visit Portsmouth.So this is a great month to visit if you prefer dry days with pleasant temperatures.
Portsmouth Temperature in June
Min Temperature
26°C (79°F)
Max Temperature
29°C (84°F)
Chance of Rain
61%
Precipitation
70 mm (2.8 in)
Rainy days
18 days
Humidity
72% *
Sunshine
228 hours *
Percentage Sunshine
*
* Data from: Douglas-Charles Airport, Dominica (18 KM, 11 Miles).
Portsmouth Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Portsmouth - and find the best time to visit.
Daily Historical Temperatures
49-year average (1976-2025)
Based on our historical records, temperatures in Portsmouth typically stay consistent throughout June, with daily highs averaging around 29°C (84°F). Nights are warm, with lows around 25°C (77°F).
Average temperatures in June
Historical weather records for Portsmouth in June
Browse day-by-day weather records for Portsmouth spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Portsmouth historical weather extremes in June
Based on 35 years of weather observations in Portsmouth between 1991 and 2026, these are the recorded extremes.
- The warmest day in June was on June 14, 2011, with a maximum of 35°C (95°F).
- On June 29, 2006, Portsmouth saw its coldest June day with temperatures maxing out at 27°C (81°F).
- The lowest overnight temperature recorded in June was 15°C (59°F) (June 28, 2023).
Best Places in Dominica in June
Find out more about the weather in Dominica and which places have the best travel conditions in this month. See all of Dominica in June →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Portsmouth in June
Warm weather calls for comfortable, breathable clothing in June. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Rain is likely on several days, so bring a good rain jacket. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.
What To Do in Portsmouth in June
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming9/10 -
Cycling7/10 -
Walking7/10 -
Camping7/10 -
Outdoor sports7/10
Portsmouth 3-Day Forecast
More climate data for Portsmouth
Temperature Rainfall Sunshine Humidity
See the full Portsmouth climate overview or explore weather in Dominica.
Popular in June
Where to go in June - average daytime high across popular destinations.
Salisbury
29°C (84°F) Castle Bruce28°C (82°F) Scotts Head Village28°C (82°F) Pont Cassé28°C (82°F) Marigot28°C (82°F) Portsmouth29°C (84°F) Calibishie29°C (84°F) Roseau28°C (82°F) Bucket list
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