Portsmouth

Zicack, Saint John Parish, Dominica

Current Weather

28°82°

Drizzle

Feels Like: 33°92°

Min: 26°79°

Max: 28°83°

The next few hours will be mostly clear, with today reaching 28°C and dropping to 27°C. The coming days will be drizzle

Hourly Forecast

27°81°28°82°28°83°28°83°28°83°28°83°28°83°28°82°28°82°28°82°28°82°27°81°27°81°27°81°27°81°27°81°28°82°28°83°29°84°29°85°30°85°30°85°29°85°29°85°
86%
86%
86%
20%
20%
20%
8%
8%
8%
72%
72%
72%
3pm
4pm
5pm
6pm
7pm
8pm
9pm
10pm
11pm
12am
1am
2am
3am
4am
5am
6am
7am
8am
9am
10am
11am
12pm
1pm
2pm
Today
Tomorrow

Want a closer look at the weather?

Premium adds minute-by-minute rain timing, yesterday comparisons, and more detail across Airpult.

Get Premium

Air Quality

17
Good

Air quality is satisfactory, and air pollution poses little or no risk.

GoodHazardous

Daylight Hours

06:03

Sunrise

17:36

Sunset

11 hours 32 minutes of sunlight today

Moon

15:13

Moonrise

02:37

Moonset

Daily Forecast

Today

26°79°
28°83°

Friday

27°81°
30°85°

Saturday

27°80°
30°86°

Sunday

27°80°
31°88°

Monday

27°81°
30°87°

Tuesday

27°80°
29°85°

Wednesday

26°79°
30°86°

Thursday

26°79°
30°86°

Friday

27°80°
29°85°

Saturday

27°81°
30°86°

UV Index

No protection needed
2Low
LowExtreme

Humidity

85%Humid
LowHigh

Looking at the night sky?

See moon phases, eclipses, and seasons for this year.

View astronomy

Current stargazing conditions?

See sky darkness, moon phase, and the best viewing window for Portsmouth.

View stargazing score

Weather in Portsmouth today, October 22, 2026

Portsmouth starts October 22, 2026 looking damp, with rain in the forecast and wetter spells likely at times. Waterproof kit is the safer call for early plans.Portsmouth starts October 22, 2026 looking damp, with rain in the forecast and wetter spells likely at times. Waterproof kit is the safer call for early plans.

Expect highs of 28°C and cooler readings close to 26°C. Relative humidity sits between 83% and 86%, reaching its peak around 15:00. Expect gentle winds, highest near 15:00 at 15 km/h.Expect highs of 83°F and cooler readings close to 79°F. Relative humidity sits between 83% and 86%, reaching its peak around 15:00. Expect gentle winds, highest near 15:00 at 9 mph.

Expect the wet theme to continue later, as rain odds reach 86% near 15:00. Cloud amounts hold near 26% around 20:00. Horizontal visibility holds close to 16.1 km. Sunrise is at 06:03 and sunset at 17:36, giving 11 hours 32 minutes of sunlight today.Expect the wet theme to continue later, as rain odds reach 86% near 15:00. Cloud amounts hold near 26% around 20:00. Horizontal visibility holds close to 10 mi. Sunrise is at 06:03 and sunset at 17:36, giving 11 hours 32 minutes of sunlight today.

The practical takeaway for Portsmouth on October 22, 2026 is simple: plan for rain, keep layers handy, and work around a high of about 28°C.The practical takeaway for Portsmouth on October 22, 2026 is simple: plan for rain, keep layers handy, and work around a high of about 83°F.

Frequently asked questions about weather in Portsmouth

How warm does it get in Portsmouth?

The warmest month in Portsmouth is September, with average high temperatures of 28°C. The average temperature during this period is around 28°C.The warmest month in Portsmouth is September, with average high temperatures of 83°F. The average temperature during this period is around 82°F.

How cold does it get in Portsmouth?

The coldest month in Portsmouth is February, with average low temperatures of 24°C. The average temperature during this period is around 25°C.The coldest month in Portsmouth is February, with average low temperatures of 76°F. The average temperature during this period is around 77°F.

What is the wettest time of year in Portsmouth?

The wettest month in Portsmouth is September, with an average of 131 mm of precipitation.The wettest month in Portsmouth is September, with an average of 5.2 in of precipitation.

What is the driest time of year in Portsmouth?

The driest month in Portsmouth is March, with an average of 33 mm of precipitation.The driest month in Portsmouth is March, with an average of 1.3 in of precipitation.

View full climate insights for Portsmouth →