🔎 Weather for a date or period
Actual day-by-day weather for the selected period (ERA5). Up to 1 year.
📆 On this day before
Data for previous years is being prepared.
🗓 Monthly climate in Belfast
| Month | Day | Night | Precip |
|---|---|---|---|
| January | +7° | +3° | 68 mm |
| February | +8° | +3° | 79 mm |
| March | +9° | +4° | 82 mm |
| April | +11° | +5° | 61 mm |
| May | +15° | +8° | 70 mm |
| June | +17° | +11° | 81 mm |
| July | +18° | +12° | 100 mm |
| August | +18° | +12° | 104 mm |
| September | +16° | +11° | 87 mm |
| October | +13° | +9° | 90 mm |
| November | +10° | +6° | 89 mm |
| December | +8° | +4° | 98 mm |
📊
Daily records and archive in Belfast are being collected (ERA5) — they will appear after the next cycle.
📒 For school and home
Weather diary
ready-made observation table for a month — for school
Weather for the month
September calendar: forecast + climate normal
City water
Celtic Sea ~+14° — where to swim
FAQ about the weather archive in Belfast ❓
What was the weather in Belfast on a specific date?
Pick a date or range in the form above — we show actual day-by-day weather (ERA5 reanalysis, up to a year back). For today’s date in past years see “On this day before”.
What's the typical weather in Belfast in September?
On average +16° by day, +11° at night, precipitation about 87 mm (ERA5 climate normal).
Since what year is the weather archive in Belfast kept?
Climate normals and records come from the ERA5 reanalysis. Actual day-by-day weather is available for the last year.
Climate and weather archive in Belfast
Monthly climate normals in Belfast (average day and night temperatures, precipitation) are computed from the ERA5 reanalysis. The observation archive accrues from launch. Data: Open-Meteo (ERA5).