Skip to main content
Every UK forecast, compared
checkweather.io
CheckWeather UKPortslade
Forecast confidence: Medium · models disagree by 2°C

Portslade weather

Loading live data…

Cloudy,rain likely tomorrow

Met Office, the European and the American model put Portslade's high today between 21° and 23°, a 2° split. Tomorrow looks light drizzle around 22°, with a 39% chance of rain.

22°13°
22°16°
19°13°
20°10°
19°11°
22°15°
Todaysplit ±2°Tomorrowsplit ±3°Tuesdaysplit ±3°Wednesdaymodels agreeThursdaysplit ±3°Fridaysplit ±3°
Met OfficeUKMO model
21°
Cloudy
Today 21°·Low 13°·Rain -
EuropeanECMWF
23°
Light drizzle
Today 23°·Low 13°·Rain 27%
AmericanNOAA GFS
22°
Cloudy
Today 22°·Low 13°·Rain 8%

The weather map: all three models at once

Met Office, European, American side by side around Portslade and nearby towns.Live rain radar →
Loading the three model maps…

Next 14 hours

consensus of the three models

14-day forecast

where the models agree, and where they split
Today
Cloudy
22° 13°
±2°
Tomorrow
Light drizzle
22° 16°
±3°
Tue
Rain
19° 13°
±3°
Wed
Cloudy
20° 10°
models agree
Thu
Heavy drizzle
19° 11°
±3°
Fri
Light drizzle
22° 15°
±3°
Sat
Cloudy
20° 11°
models agree
Sun
Light drizzle
23° 16°
models agree
Mon
Cloudy
22° 14°
models agree
Tue
Light drizzle
22° 15°
±5°
Wed
Light drizzle
20° 13°
±6°
Thu
Light drizzle
21° 11°
±5°
Fri
Light rain
20° 12°
models agree
Sat
Light drizzle
20° 11°
±5°

Portslade, England is at its warmest in Aug (average highs near 20°C) and coldest in Jan (lows around 3°C), with roughly 1106 mm of precipitation across the year. Below, compare what Met Office, European, American forecast for Portslade right now, and see exactly where they disagree.

We grade every model against the weather that actually happened, so you can see which forecast model is most accurate in United Kingdom before you trust any single number.

Portslade climate by month

average daytime high and overnight low across a typical year
Jan
Feb
10°
Mar
10°
Apr
12°
May
16°
Jun
19°
12°
Jul
19°
14°
Aug
20°
14°
Sep
20°
14°
Oct
16°
11°
Nov
11°
Dec
10°

Which forecast is most accurate in Portslade?

CheckWeather Score — graded against the weather that actually happened
ProviderCheckWeather Score🌡 Temp💨 Wind🌧 RainRun by
Met Office logo
Met Office ★ Best
86
/100rank #1
92±0.5°C96±1.2 mph7184% hitMet Office (United Kingdom)Exeter, United Kingdom
European logo
European
81
/100rank #2
73±1.5°C94±2.0 mph8290% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
81
/100rank #3
72±1.5°C93±2.0 mph8290% hitNOAA / NCEP (United States)College Park, Maryland, USA

The CheckWeather Score blends temperature, wind and rain accuracy — each measured against ERA5 (the recorded weather) over the last 30 days across 1880 cities. Lower error means a higher score. See which forecast model is most accurate in United Kingdom, how we measure forecast accuracy, or which model each weather app uses.

Where the models disagree

temperature and rain, judged separately
DayTemperatureRain
Today±2°21° to 23°±19%8% to 27% chance
Tomorrow±3°21° to 24°±29%10% to 39% chance
Tue±3°18° to 21°±23%54% to 77% chance
Wed±1°19° to 20°±4%2% to 6% chance
Thu±3°17° to 20°±12%16% to 28% chance

The models often agree on temperature and still split on rain — and rain is usually what decides whether a plan survives. A wide rain range means the shower is genuinely uncertain, not that the forecast is wrong.

Sunrise and sunset in Portslade

today, local time
Sunrise
06:22
Sunset
19:35
Daylight
13h 13m

Common questions

What's the weather in Portslade today?
On this page we show what Met Office, European, American each forecast for Portslade today, side by side and updated live. When all three agree the forecast is reliable; when they split, we flag it so you know the day is genuinely less certain.
Will it rain in Portslade today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from Met Office, European, American for Portslade and flag the days where the models disagree on whether showers actually arrive, which is exactly when a single app can catch you out.
Which forecast is most accurate for Portslade?
Over the last 30 days, the Met Office model has been the most accurate for Portslade (CheckWeather Score 86/100), ahead of the European at 81. We grade every model against the recorded weather. See the UK accuracy scoreboard for the full method.
What is the warmest month in Portslade?
August is typically the warmest month in Portslade, with average highs around 20°C.
How cold does Portslade get?
The coldest month in Portslade is January, when overnight lows average about 3°C.
How much rain does Portslade get?
Portslade sees roughly 1106 mm of precipitation a year, with October usually the wettest month.

Nearby

More UK weather