Belfast, United Kingdom 14-Day Forecast
52°
Overcast right now
Today: high 60°, low 52°
Updated 14 min ago
Belfast weather for the next 14 days
Thursday, September 17
Patchy rain nearby High 56° Low 48°Precipitation
72%
· 0.08 in
Max wind
18 mph
Humidity
87%
UV index
2 - Low
Sunrise / sunset
07:00 AM / 07:36 PM
Friday, September 18
Patchy rain nearby High 59° Low 48°Precipitation
87%
· 0.18 in
Max wind
17 mph
Humidity
90%
UV index
1 - Low
Sunrise / sunset
07:02 AM / 07:33 PM
Saturday, September 19
Patchy rain nearby High 60° Low 49°Precipitation
58%
· 0.04 in
Max wind
18 mph
Humidity
82%
UV index
3 - Moderate
Sunrise / sunset
07:04 AM / 07:30 PM
Sunday, September 20
Overcast High 60° Low 46°Precipitation
74%
· 0.04 in
Max wind
11 mph
Humidity
92%
UV index
4 - Moderate
Sunrise / sunset
07:05 AM / 07:28 PM
Monday, September 21
Sunny High 71° Low 59°Precipitation
20%
· 0.0 in
Max wind
10 mph
Humidity
87%
UV index
6 - High
Sunrise / sunset
07:07 AM / 07:25 PM
Tuesday, September 22
Sunny High 69° Low 55°Precipitation
19%
· 0.0 in
Max wind
4 mph
Humidity
86%
UV index
5 - Moderate
Sunrise / sunset
07:09 AM / 07:23 PM
Wednesday, September 23
Mist High 70° Low 54°Precipitation
19%
· 0.0 in
Max wind
11 mph
Humidity
86%
UV index
5 - Moderate
Sunrise / sunset
07:11 AM / 07:20 PM
Thursday, September 24
Patchy rain nearby High 59° Low 45°Precipitation
28%
· 0.0 in
Max wind
18 mph
Humidity
83%
UV index
3 - Moderate
Sunrise / sunset
07:13 AM / 07:18 PM
Friday, September 25
Overcast High 63° Low 43°Precipitation
16%
· 0.0 in
Max wind
7 mph
Humidity
81%
UV index
5 - Moderate
Sunrise / sunset
07:15 AM / 07:15 PM
Saturday, September 26
Sunny High 66° Low 48°Precipitation
9%
· 0.0 in
Max wind
8 mph
Humidity
80%
UV index
5 - Moderate
Sunrise / sunset
07:16 AM / 07:13 PM
Sunday, September 27
Patchy rain nearby High 62° Low 51°Precipitation
79%
· 0.11 in
Max wind
13 mph
Humidity
88%
UV index
4 - Moderate
Sunrise / sunset
07:18 AM / 07:10 PM
Monday, September 28
Patchy rain nearby High 59° Low 50°Precipitation
45%
· 0.02 in
Max wind
16 mph
Humidity
80%
UV index
4 - Moderate
Sunrise / sunset
07:20 AM / 07:08 PM
Tuesday, September 29
Patchy rain nearby High 56° Low 49°Precipitation
75%
· 0.11 in
Max wind
21 mph
Humidity
79%
UV index
3 - Moderate
Sunrise / sunset
07:22 AM / 07:05 PM
Belfast 14-day outlook: the story
The warmest day of Belfast's 14-day outlook is Monday, September 21 with a high near 71°F (22°C); the coolest night comes Friday, September 25, dipping to 43°F (6°C). Temperatures hold fairly steady from week to week. Highs over the next two weeks average 62°F (17°C), right in line with the typical September high of 61°F (16°C).
Precipitation is most likely on Thursday 17, Friday 18, Saturday 19, Sunday 20 and beyond; the wettest day looks like Friday, September 18 with about 0.18 in (4.6 mm) expected. For the weekend, expect Saturday 60°F (16°C) and patchy rain nearby / Sunday 60°F (16°C) and overcast.
For typical conditions month by month, see the Belfast climate & average temperatures guide.
Belfast forecast questions
Will it rain in Belfast this week?
The forecast currently shows meaningful precipitation chances on 6 of the next 14 days, peaking around Friday, September 18.
What will be the warmest day in Belfast over the next 14 days?
Monday, September 21, with a forecast high near 71°F (22°C).
How accurate is a 14-day forecast for Belfast?
Days 1-3 are highly reliable, days 4-7 capture the overall pattern well, and days 8-14 indicate trends rather than exact figures - check back as the date approaches; this page refreshes throughout the day.
Average temperatures in Belfast by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 45° | 37° | 14 | 2.7 in | 3.8 h/day | 86% |
| February | 47° | 38° | 14 | 3.1 in | 5.4 h/day | 83% |
| March | 49° | 38° | 16 | 3.2 in | 6.8 h/day | 82% |
| April | 52° | 41° | 13 | 2.4 in | 9.0 h/day | 79% |
| May | 58° | 46° | 14 | 2.8 in | 10.5 h/day | 78% |
| June | 63° | 51° | 14 | 3.2 in | 10.9 h/day | 78% |
| July | 65° | 53° | 18 | 3.9 in | 9.8 h/day | 80% |
| August | 64° | 54° | 18 | 4.1 in | 9.3 h/day | 82% |
| September | 61° | 51° | 14 | 3.4 in | 7.7 h/day | 83% |
| October | 56° | 47° | 14 | 3.5 in | 5.7 h/day | 84% |
| November | 50° | 42° | 14 | 3.5 in | 4.1 h/day | 86% |
| December | 47° | 40° | 15 | 3.9 in | 2.9 h/day | 88% |
14-day forecasts nearby