Will my washing dry today in Belfast?
Right now in Belfast
Checking the sky...
What Belfast weather is normally like for drying
The same engine ran over every day from 2023 to 2025, checking each fabric against the real length of that day. Something on the line dried on 94% of days in Belfast, but towels and bedding only finished on 42%. That gap is the whole problem with line drying: a thin shirt dries on almost any day, and the heavy things are what decide whether it was worth putting a wash on.
Daytime humidity averages 77% and wind 16 km/h, with roughly 108 days a year wet enough to keep the line empty. May and June are the strongest months for a full load; December and January are when the daylight runs out before a towel does.
| January | 2% |
|---|---|
| February | 16% |
| March | 33% |
| April | 59% |
| May | 77% |
| June | 77% |
| July | 70% |
| August | 73% |
| September | 52% |
| October | 31% |
| November | 6% |
| December | 0% |
Reading a Belfast day for yourself
The number that decides it is humidity, not temperature. Belfast sits at 77% on an average afternoon, which is high enough that wind and sunshine usually settle the argument. A breezy bright day here will beat a warm still one most weeks of the year.
Get washing out early. The drying rate climbs through the morning, peaks in the early afternoon and falls away sharply after about four, when the temperature drops and dew starts settling back onto the fabric. A load hung at nine and a load hung at three are two very different bets.
Washcast checks Belfast every morning
One clear verdict, a drying window for every fabric, and a warning before rain reaches the line.
Both the live verdict and the history come from the Washcast drying engine. Historical figures use Open-Meteo archive data for 2023 to 2025. Each day's drying window is derived from its own sunrise and sunset, and every fabric is checked against the hours actually available, so a short winter day fails for towels even when the air itself is fine. Forecast guidance only, conditions change quickly.