Cairnryan to Belfast Ferry Weather
Overview
The ferry route between Cairnryan and Belfast is one of the most important links between Scotland and Northern Ireland. Operated by Stena Line, it takes approximately 2 hours and 15 minutes and is one of the shortest yet busiest ferry connections across the Irish Sea.
Weather conditions on the Irish Sea can significantly impact ferry travel. While this crossing is relatively short, high winds and rough seas can still lead to delays or cancellations. Autumn and winter storms are the most common causes of disruption, and passengers prone to seasickness (you can use our calculator to estimate the risk) should take precautions during periods of rough weather.
Wave Forecast
Strong westerly and southwesterly winds influence waves in the Irish Sea. In normal conditions, wave heights range between 0.5 and 1.5 meters, but they can reach 3 to 5 meters during storms. The worst conditions usually occur between October and March, when low-pressure systems bring strong winds and rough seas.
Wind Forecast
Strong winds are frequent on the Irish Sea, particularly in winter. Wind speeds of 25-35 knots (46-65 km/h) are typical; during severe storms, gusts can exceed 50 knots (93 km/h). These conditions can create choppy waters and increase motion on board, affecting passenger comfort and the risk of seasickness.
The vessels Stena Line uses on this route can withstand intense storms. Read more about this in our ferry cancellation policies.
Rain and Storm Forecast
Rain and storm conditions are frequent in this region, particularly between late autumn and early spring. Heavy rain can reduce visibility and occasionally lead to ferry delays. Storms associated with low-pressure systems may bring high winds and rough seas, increasing the likelihood of motion sickness.
5-Day Weather Forecast
Cairnryan Weather Forecast
Cairnryan, GB
8:56 pm,
Sep 29, 2025
13°C | °F
L: 12° |
H: 12°
Feels like 12°C | °F°
overcast clouds
- Temperature
- Precipitation
- Rain Chance
- Wind
- Humidity
- Pressure
6.23 kmh
10:00 pm
5.98 kmh
1:00 am
5.09 kmh
4:00 am
5.07 kmh
7:00 am
6.05 kmh
10:00 am
5.95 kmh
1:00 pm
7.1 kmh
4:00 pm
6.66 kmh
7:00 pm
8.69 kmh
10:00 pm
9.24 kmh
1:00 am
7.11 kmh
4:00 am
7.85 kmh
7:00 am
8.06 kmh
10:00 am
8.37 kmh
1:00 pm
7.74 kmh
4:00 pm
7.29 kmh
7:00 pm
7.54 kmh
10:00 pm
7.17 kmh
1:00 am
7.4 kmh
4:00 am
9.45 kmh
7:00 am
11.23 kmh
10:00 am
13.27 kmh
1:00 pm
15.18 kmh
4:00 pm
14.2 kmh
7:00 pm
10.51 kmh
10:00 pm
8.23 kmh
1:00 am
6.95 kmh
4:00 am
4.41 kmh
7:00 am
3.95 kmh
10:00 am
5.92 kmh
1:00 pm
12.46 kmh
4:00 pm
17 kmh
7:00 pm
16.23 kmh
10:00 pm
22.28 kmh
1:00 am
26.15 kmh
4:00 am
22.29 kmh
7:00 am
21.55 kmh
10:00 am
19.76 kmh
1:00 pm
19.52 kmh
4:00 pm
19.77 kmh
7:00 pm
Today
10:00 pm
12° / 12°°C | °F
0 mm
0%
22 Km/h
93 %
1022 hPa
0 mm/h
Tomorrow
10:00 pm
12° / 15°°C | °F
0.84 mm
84%
31 Km/h
95 %
1022 hPa
0 mm/h
Wednesday
10:00 pm
14° / 15°°C | °F
1 mm
100%
33 Km/h
98 %
1021 hPa
0 mm/h
Thursday
10:00 pm
14° / 15°°C | °F
1 mm
100%
55 Km/h
98 %
1020 hPa
0 mm/h
Friday
10:00 pm
11° / 14°°C | °F
1 mm
100%
61 Km/h
96 %
1002 hPa
0 mm/h
Today
10:00 pm
12° / 12°°C | °F
0 mm
0%
22 Km/h
93 %
1022 hPa
0 mm/h
Tomorrow
1:00 am
12° / 12°°C | °F
0.2 mm
20%
22 Km/h
92 %
1022 hPa
0 mm/h
Tomorrow
4:00 am
12° / 12°°C | °F
0.84 mm
84%
18 Km/h
91 %
1021 hPa
0 mm/h
Tomorrow
7:00 am
12° / 12°°C | °F
0.15 mm
15%
18 Km/h
92 %
1022 hPa
0 mm/h
Tomorrow
10:00 am
14° / 14°°C | °F
0 mm
0%
22 Km/h
91 %
1022 hPa
0 mm/h
Tomorrow
1:00 pm
15° / 15°°C | °F
0 mm
0%
21 Km/h
92 %
1022 hPa
0 mm/h
Tomorrow
4:00 pm
14° / 14°°C | °F
0 mm
0%
26 Km/h
93 %
1022 hPa
0 mm/h
Tomorrow
7:00 pm
14° / 14°°C | °F
0.2 mm
20%
24 Km/h
94 %
1022 hPa
0 mm/h
Tomorrow
10:00 pm
14° / 14°°C | °F
0 mm
0%
31 Km/h
95 %
1022 hPa
0 mm/h
Wednesday
1:00 am
14° / 14°°C | °F
1 mm
100%
33 Km/h
98 %
1020 hPa
0 mm/h
Wednesday
4:00 am
14° / 14°°C | °F
1 mm
100%
26 Km/h
98 %
1020 hPa
0 mm/h
Wednesday
7:00 am
15° / 15°°C | °F
1 mm
100%
28 Km/h
98 %
1020 hPa
0 mm/h
Wednesday
10:00 am
15° / 15°°C | °F
1 mm
100%
29 Km/h
97 %
1021 hPa
0 mm/h
Wednesday
1:00 pm
15° / 15°°C | °F
1 mm
100%
30 Km/h
96 %
1021 hPa
0 mm/h
Wednesday
4:00 pm
14° / 14°°C | °F
1 mm
100%
28 Km/h
95 %
1020 hPa
0 mm/h
Wednesday
7:00 pm
15° / 15°°C | °F
0.8 mm
80%
26 Km/h
94 %
1020 hPa
0 mm/h
Wednesday
10:00 pm
15° / 15°°C | °F
0.2 mm
20%
27 Km/h
94 %
1020 hPa
0 mm/h
Thursday
1:00 am
14° / 14°°C | °F
0.31 mm
31%
26 Km/h
95 %
1020 hPa
0 mm/h
Thursday
4:00 am
14° / 14°°C | °F
1 mm
100%
27 Km/h
97 %
1018 hPa
0 mm/h
Thursday
7:00 am
14° / 14°°C | °F
1 mm
100%
34 Km/h
96 %
1017 hPa
0 mm/h
Thursday
10:00 am
14° / 14°°C | °F
0.94 mm
94%
40 Km/h
92 %
1015 hPa
0 mm/h
Thursday
1:00 pm
15° / 15°°C | °F
0.76 mm
76%
48 Km/h
89 %
1013 hPa
0 mm/h
Thursday
4:00 pm
14° / 14°°C | °F
1 mm
100%
55 Km/h
91 %
1008 hPa
0 mm/h
Thursday
7:00 pm
14° / 14°°C | °F
1 mm
100%
51 Km/h
95 %
1005 hPa
0 mm/h
Thursday
10:00 pm
14° / 14°°C | °F
1 mm
100%
38 Km/h
98 %
1002 hPa
0 mm/h
Friday
1:00 am
13° / 13°°C | °F
1 mm
100%
30 Km/h
85 %
1001 hPa
0 mm/h
Friday
4:00 am
12° / 12°°C | °F
1 mm
100%
25 Km/h
89 %
1002 hPa
0 mm/h
Friday
7:00 am
12° / 12°°C | °F
1 mm
100%
16 Km/h
87 %
1002 hPa
0 mm/h
Friday
10:00 am
12° / 12°°C | °F
0 mm
0%
14 Km/h
88 %
1002 hPa
0 mm/h
Friday
1:00 pm
12° / 12°°C | °F
0 mm
0%
21 Km/h
87 %
999 hPa
0 mm/h
Friday
4:00 pm
12° / 12°°C | °F
1 mm
100%
45 Km/h
96 %
990 hPa
0 mm/h
Friday
7:00 pm
14° / 14°°C | °F
1 mm
100%
61 Km/h
96 %
977 hPa
0 mm/h
Friday
10:00 pm
11° / 11°°C | °F
1 mm
100%
58 Km/h
81 %
973 hPa
0 mm/h
Saturday
1:00 am
10° / 10°°C | °F
1 mm
100%
80 Km/h
89 %
962 hPa
0 mm/h
Saturday
4:00 am
11° / 11°°C | °F
1 mm
100%
94 Km/h
91 %
966 hPa
0 mm/h
Saturday
7:00 am
11° / 11°°C | °F
1 mm
100%
80 Km/h
85 %
974 hPa
0 mm/h
Saturday
10:00 am
11° / 11°°C | °F
1 mm
100%
78 Km/h
90 %
977 hPa
0 mm/h
Saturday
1:00 pm
11° / 11°°C | °F
1 mm
100%
71 Km/h
81 %
982 hPa
0 mm/h
Saturday
4:00 pm
11° / 11°°C | °F
1 mm
100%
70 Km/h
82 %
985 hPa
0 mm/h
Saturday
7:00 pm
11° / 11°°C | °F
1 mm
100%
71 Km/h
83 %
987 hPa
0 mm/h
Belfast Weather Forecast
Belfast, GB
8:56 pm,
Sep 29, 2025
13°C | °F
L: 12° |
H: 13°
Feels like 13°C | °F°
overcast clouds
- Temperature
- Precipitation
- Rain Chance
- Wind
- Humidity
- Pressure
1.86 kmh
10:00 pm
1.98 kmh
1:00 am
2.11 kmh
4:00 am
1.92 kmh
7:00 am
2.08 kmh
10:00 am
2.23 kmh
1:00 pm
2.98 kmh
4:00 pm
2.89 kmh
7:00 pm
3.66 kmh
10:00 pm
3.54 kmh
1:00 am
4.05 kmh
4:00 am
3.99 kmh
7:00 am
3.79 kmh
10:00 am
3.07 kmh
1:00 pm
4.27 kmh
4:00 pm
3.09 kmh
7:00 pm
2.66 kmh
10:00 pm
2.63 kmh
1:00 am
2.45 kmh
4:00 am
3.87 kmh
7:00 am
4.47 kmh
10:00 am
8.1 kmh
1:00 pm
9.14 kmh
4:00 pm
5.7 kmh
7:00 pm
3.29 kmh
10:00 pm
6.35 kmh
1:00 am
5.51 kmh
4:00 am
2.86 kmh
7:00 am
3.04 kmh
10:00 am
3.62 kmh
1:00 pm
8.1 kmh
4:00 pm
9.67 kmh
7:00 pm
13.63 kmh
10:00 pm
19.21 kmh
1:00 am
16.94 kmh
4:00 am
15.28 kmh
7:00 am
12.94 kmh
10:00 am
12.06 kmh
1:00 pm
12.64 kmh
4:00 pm
12.14 kmh
7:00 pm
Today
10:00 pm
12° / 13°°C | °F
0 mm
0%
7 Km/h
94 %
1022 hPa
0 mm/h
Tomorrow
10:00 pm
10° / 15°°C | °F
1 mm
100%
13 Km/h
97 %
1022 hPa
0 mm/h
Wednesday
10:00 pm
14° / 17°°C | °F
1 mm
100%
15 Km/h
97 %
1020 hPa
0 mm/h
Thursday
10:00 pm
13° / 15°°C | °F
1 mm
100%
33 Km/h
98 %
1019 hPa
0 mm/h
Friday
10:00 pm
9° / 15°°C | °F
1 mm
100%
49 Km/h
98 %
1003 hPa
0 mm/h
Today
10:00 pm
11° / 13°°C | °F
0 mm
0%
7 Km/h
94 %
1022 hPa
0 mm/h
Tomorrow
1:00 am
10° / 12°°C | °F
0 mm
0%
7 Km/h
93 %
1022 hPa
0 mm/h
Tomorrow
4:00 am
10° / 11°°C | °F
0 mm
0%
8 Km/h
92 %
1021 hPa
0 mm/h
Tomorrow
7:00 am
12° / 12°°C | °F
0 mm
0%
7 Km/h
90 %
1021 hPa
0 mm/h
Tomorrow
10:00 am
13° / 13°°C | °F
0 mm
0%
7 Km/h
85 %
1022 hPa
0 mm/h
Tomorrow
1:00 pm
14° / 14°°C | °F
0 mm
0%
8 Km/h
90 %
1022 hPa
0 mm/h
Tomorrow
4:00 pm
14° / 14°°C | °F
0 mm
0%
11 Km/h
88 %
1021 hPa
0 mm/h
Tomorrow
7:00 pm
15° / 15°°C | °F
0 mm
0%
10 Km/h
88 %
1021 hPa
0 mm/h
Tomorrow
10:00 pm
14° / 14°°C | °F
1 mm
100%
13 Km/h
97 %
1021 hPa
0 mm/h
Wednesday
1:00 am
14° / 14°°C | °F
1 mm
100%
13 Km/h
97 %
1020 hPa
0 mm/h
Wednesday
4:00 am
14° / 14°°C | °F
1 mm
100%
15 Km/h
97 %
1020 hPa
0 mm/h
Wednesday
7:00 am
15° / 15°°C | °F
1 mm
100%
14 Km/h
97 %
1020 hPa
0 mm/h
Wednesday
10:00 am
15° / 15°°C | °F
1 mm
100%
14 Km/h
95 %
1020 hPa
0 mm/h
Wednesday
1:00 pm
15° / 15°°C | °F
1 mm
100%
11 Km/h
96 %
1020 hPa
0 mm/h
Wednesday
4:00 pm
17° / 17°°C | °F
0 mm
0%
15 Km/h
89 %
1020 hPa
0 mm/h
Wednesday
7:00 pm
15° / 15°°C | °F
0 mm
0%
11 Km/h
93 %
1020 hPa
0 mm/h
Wednesday
10:00 pm
15° / 15°°C | °F
0 mm
0%
10 Km/h
92 %
1020 hPa
0 mm/h
Thursday
1:00 am
13° / 13°°C | °F
0 mm
0%
9 Km/h
96 %
1019 hPa
0 mm/h
Thursday
4:00 am
13° / 13°°C | °F
1 mm
100%
9 Km/h
98 %
1018 hPa
0 mm/h
Thursday
7:00 am
13° / 13°°C | °F
1 mm
100%
14 Km/h
95 %
1016 hPa
0 mm/h
Thursday
10:00 am
14° / 14°°C | °F
0 mm
0%
16 Km/h
92 %
1014 hPa
0 mm/h
Thursday
1:00 pm
15° / 15°°C | °F
0 mm
0%
29 Km/h
86 %
1011 hPa
0 mm/h
Thursday
4:00 pm
14° / 14°°C | °F
0.79 mm
79%
33 Km/h
90 %
1006 hPa
0 mm/h
Thursday
7:00 pm
13° / 13°°C | °F
1 mm
100%
21 Km/h
95 %
1004 hPa
0 mm/h
Thursday
10:00 pm
14° / 14°°C | °F
1 mm
100%
12 Km/h
96 %
1001 hPa
0 mm/h
Friday
1:00 am
10° / 10°°C | °F
1 mm
100%
23 Km/h
93 %
1002 hPa
0 mm/h
Friday
4:00 am
11° / 11°°C | °F
0.37 mm
37%
20 Km/h
95 %
1002 hPa
0 mm/h
Friday
7:00 am
9° / 9°°C | °F
0 mm
0%
10 Km/h
98 %
1003 hPa
0 mm/h
Friday
10:00 am
12° / 12°°C | °F
0 mm
0%
11 Km/h
91 %
1002 hPa
0 mm/h
Friday
1:00 pm
12° / 12°°C | °F
0.2 mm
20%
13 Km/h
92 %
998 hPa
0 mm/h
Friday
4:00 pm
10° / 10°°C | °F
1 mm
100%
29 Km/h
96 %
988 hPa
0 mm/h
Friday
7:00 pm
15° / 15°°C | °F
1 mm
100%
35 Km/h
93 %
976 hPa
0 mm/h
Friday
10:00 pm
10° / 10°°C | °F
0.21 mm
21%
49 Km/h
79 %
972 hPa
0 mm/h
Saturday
1:00 am
9° / 9°°C | °F
1 mm
100%
69 Km/h
90 %
965 hPa
0 mm/h
Saturday
4:00 am
9° / 9°°C | °F
1 mm
100%
61 Km/h
92 %
974 hPa
0 mm/h
Saturday
7:00 am
9° / 9°°C | °F
1 mm
100%
55 Km/h
82 %
978 hPa
0 mm/h
Saturday
10:00 am
9° / 9°°C | °F
1 mm
100%
47 Km/h
91 %
982 hPa
0 mm/h
Saturday
1:00 pm
10° / 10°°C | °F
1 mm
100%
43 Km/h
85 %
985 hPa
0 mm/h
Saturday
4:00 pm
11° / 11°°C | °F
0.99 mm
99%
46 Km/h
82 %
988 hPa
0 mm/h
Saturday
7:00 pm
10° / 10°°C | °F
0.9 mm
90%
44 Km/h
79 %
990 hPa
0 mm/h
When are Ferries Most Likely to Be Canceled?
Passengers are advised to check with Stena Line before travelling during bad weather.
Other routes on the Irish Sea: