Marine Forecast - Isle of Arran

Live Sea State Warnings

No warnings currently. (Integrate Met Office API for live updates)

Tide Updates

High Tide: 08:00 (2.5m) | Low Tide: 14:00 (0.5m). (Integrate Admiralty Tide API)

Ferry Updates

Arran Ferry: On time. (Integrate CalMac API)

Hourly Wave Height Forecast
Wave Height (m) 4 3.5 3 2.5 2 1.5 1 0.5 0
Dec 21 23:00
Dec 22 01:00
Dec 22 03:00
Dec 22 05:00
Dec 22 07:00
Dec 22 09:00
Dec 22 11:00
Dec 22 13:00
Dec 22 15:00
Dec 22 17:00
Dec 22 19:00
Dec 22 21:00
Dec 22 23:00
Dec 23 01:00
Dec 23 03:00
Dec 23 05:00
Dec 23 07:00
Dec 23 09:00
Dec 23 11:00
Dec 23 13:00
Dec 23 15:00
Dec 23 17:00
Dec 23 19:00
Dec 23 21:00
Dec 23 23:00
Dec 24 01:00
Dec 24 03:00
Dec 24 05:00
Dec 24 07:00
Dec 24 09:00
Dec 24 11:00
Dec 24 18:00
Dec 25 06:00
Dec 25 18:00
Dec 26 06:00
Dec 26 18:00
Dec 27 06:00
Dec 27 18:00
Time
Time Wave Height (m)
Dec 21 23:00 0.42
Dec 22 01:00 0.44
Dec 22 03:00 0.46
Dec 22 05:00 0.48
Dec 22 07:00 0.46
Dec 22 09:00 0.42
Dec 22 11:00 0.40
Dec 22 13:00 0.36
Dec 22 15:00 0.32
Dec 22 17:00 0.28
Dec 22 19:00 0.26
Dec 22 21:00 0.26
Dec 22 23:00 0.24
Dec 23 01:00 0.24
Dec 23 03:00 0.22
Dec 23 05:00 0.22
Dec 23 07:00 0.22
Dec 23 09:00 0.24
Dec 23 11:00 0.22
Dec 23 13:00 0.22
Dec 23 15:00 0.20
Dec 23 17:00 0.22
Dec 23 19:00 0.24
Dec 23 21:00 0.26
Dec 23 23:00 0.28
Dec 24 01:00 0.30
Dec 24 03:00 0.32
Dec 24 05:00 0.30
Dec 24 07:00 0.28
Dec 24 09:00 0.26
Dec 24 11:00 0.24
Dec 24 18:00 0.22
Dec 25 06:00 0.32
Dec 25 18:00 0.36
Dec 26 06:00 0.26
Dec 26 18:00 0.22
Dec 27 06:00 0.26
Dec 27 18:00 0.44
Sunday, 21 December 2025
Time Weather Air Temp (°C) Sea Temp (°C) Wind Speed (mph) Wind Gusts (mph) Wind Dir Wind Cardinal Wave Height (m) Wave Dir Wave Cardinal Wave Period (s) Current Vel (mph) Current Dir Current Cardinal Sea Level (m) Beaufort
23:00 rain 8.6 10.5 15.9 22.3 N/A N/A 0.42 SE 3.95 0.10 E 0.36 4
Monday, 22 December 2025
Time Weather Air Temp (°C) Sea Temp (°C) Wind Speed (mph) Wind Gusts (mph) Wind Dir Wind Cardinal Wave Height (m) Wave Dir Wave Cardinal Wave Period (s) Current Vel (mph) Current Dir Current Cardinal Sea Level (m) Beaufort
00:00 rain 8.6 10.5 16.6 23.2 N/A N/A 0.42 SE 3.75 0.10 W 0.64 4
01:00 lightrain 8.3 10.5 16.6 23.2 N/A N/A 0.44 E 3.60 0.40 W 0.71 4
02:00 rain 8.6 10.5 16.1 22.5 N/A N/A 0.44 E 3.45 0.60 W 0.48 4
03:00 rain 8.4 10.5 16.6 23.2 N/A N/A 0.46 E 3.35 0.80 SW N/A 4
04:00 heavyrain 8.3 10.5 18.3 25.6 N/A N/A 0.46 E 3.30 0.60 W -0.54 4
05:00 heavyrain 8.3 10.5 20.6 28.8 N/A N/A 0.48 E 3.25 0.50 W -0.93 5
06:00 rain 8.4 10.5 19.9 27.9 N/A N/A 0.48 E 3.25 0.20 W -1.07 5
07:00 lightrain 8.4 10.5 20.1 28.1 N/A N/A 0.46 E 3.25 0.10 N -0.98 5
08:00 lightrain 8.7 10.5 20.6 28.8 N/A N/A 0.44 E 3.20 0.20 NE -0.70 5
09:00 cloudy 8.6 10.5 18.1 25.3 N/A N/A 0.42 E 3.20 0.30 NE -0.32 4
10:00 cloudy 8.7 10.5 16.1 22.5 N/A N/A 0.40 E 3.15 0.30 NE 0.10 4
11:00 partlycloudy_day 9.0 10.5 14.1 19.7 N/A N/A 0.40 E 3.10 0.10 N 0.51 4
12:00 cloudy 9.2 10.5 12.8 17.9 N/A N/A 0.38 E 3.05 0.20 NW 0.86 4
13:00 clearsky_day 9.1 10.5 11.6 16.2 N/A N/A 0.36 E 3.10 0.30 W 1.01 3
14:00 clearsky_day 8.9 10.5 11.6 16.2 N/A N/A 0.34 E 3.15 0.60 W 0.83 3
15:00 clearsky_day 8.2 10.5 10.5 14.7 N/A N/A 0.32 E 3.20 0.70 W 0.31 3
16:00 fair_night 7.3 10.5 8.9 12.5 N/A N/A 0.30 SE 3.20 0.60 W -0.34 3
17:00 clearsky_night 7.2 10.5 9.2 12.9 N/A N/A 0.28 SE 3.15 0.50 W -0.88 3
18:00 partlycloudy_night 6.7 10.5 8.1 11.3 N/A N/A 0.26 SE 3.15 0.20 W -1.16 3
19:00 partlycloudy_night 6.0 10.5 8.7 12.2 N/A N/A 0.26 SE 3.20 0.10 N -1.19 3
20:00 partlycloudy_night 5.6 10.5 7.6 10.6 N/A N/A 0.26 SE 3.30 0.30 NE -1.01 2
21:00 partlycloudy_night 5.2 10.5 6.3 8.8 N/A N/A 0.26 SE 3.40 0.30 NE -0.70 2
22:00 partlycloudy_night 4.9 10.5 7.6 10.6 N/A N/A 0.26 SE 3.55 0.30 NE -0.32 2
23:00 partlycloudy_night 4.9 10.5 10.1 14.1 N/A N/A 0.24 SE 3.70 0.30 NE 0.07 3
Tuesday, 23 December 2025
Time Weather Air Temp (°C) Sea Temp (°C) Wind Speed (mph) Wind Gusts (mph) Wind Dir Wind Cardinal Wave Height (m) Wave Dir Wave Cardinal Wave Period (s) Current Vel (mph) Current Dir Current Cardinal Sea Level (m) Beaufort
00:00 clearsky_night 4.7 10.5 8.3 11.6 N/A N/A 0.24 SE 3.75 0.20 NE 0.44 3
01:00 cloudy 4.4 10.5 8.5 11.9 N/A N/A 0.24 SE 3.70 0.20 NW 0.65 3
02:00 cloudy 4.1 10.5 8.1 11.3 N/A N/A 0.22 SE 3.55 0.40 W 0.60 3
03:00 cloudy 4.4 10.5 8.7 12.2 N/A N/A 0.22 SE 3.45 0.60 W 0.22 3
04:00 cloudy 5.0 10.5 9.8 13.7 N/A N/A 0.22 SE 3.40 0.60 W -0.34 3
05:00 cloudy 4.9 10.5 10.5 14.7 N/A N/A 0.22 SE 3.35 0.40 W -0.84 3
06:00 cloudy 5.0 10.5 11.6 16.2 N/A N/A 0.22 SE 3.35 0.10 W -1.11 3
07:00 cloudy 5.3 10.5 12.1 16.9 N/A N/A 0.22 SE 3.30 N/A E -1.13 3
08:00 cloudy 5.4 10.5 12.3 17.2 N/A N/A 0.24 SE 3.30 0.20 NE -0.95 3
09:00 cloudy 5.5 10.5 12.3 17.2 N/A N/A 0.24 SE 3.30 0.30 NE -0.63 3
10:00 cloudy 5.8 10.5 11.4 16.0 N/A N/A 0.24 SE 3.35 0.30 NE -0.21 3
11:00 cloudy 6.1 10.5 11.6 16.2 N/A N/A 0.22 SE 3.40 0.30 NE 0.23 3
12:00 cloudy 6.7 10.5 11.4 16.0 N/A N/A 0.22 SE 3.50 0.20 NE 0.64 3
13:00 cloudy 7.1 10.5 10.3 14.4 N/A N/A 0.22 SE 3.60 0.10 W 0.90 3
14:00 cloudy 7.1 10.5 10.3 14.4 N/A N/A 0.20 SE 3.75 0.40 W 0.88 3
15:00 cloudy 7.1 10.5 11.2 15.7 N/A N/A 0.20 SE 3.80 0.60 W 0.49 3
16:00 cloudy 7.1 10.5 12.1 16.9 N/A N/A 0.22 SE 3.75 0.80 SW -0.16 3
17:00 cloudy 7.1 10.5 11.9 16.7 N/A N/A 0.22 SE 3.65 0.50 SW -0.81 3
18:00 cloudy 7.0 10.5 11.0 15.4 N/A N/A 0.24 SE 3.55 0.40 W -1.24 3
19:00 cloudy 7.0 10.5 10.3 14.4 N/A N/A 0.24 SE 3.50 0.10 W -1.40 3
20:00 cloudy 7.1 10.5 9.4 13.2 N/A N/A 0.26 SE 3.45 N/A E -1.37 3
21:00 cloudy 7.0 10.5 9.8 13.7 N/A N/A 0.26 SE 3.40 0.20 NE -1.20 3
22:00 cloudy 7.0 10.4 10.5 14.7 N/A N/A 0.28 SE 3.35 0.30 NE -0.91 3
23:00 cloudy 7.1 10.4 11.2 15.7 N/A N/A 0.28 SE 3.35 0.20 NE -0.53 3
Wednesday, 24 December 2025
Time Weather Air Temp (°C) Sea Temp (°C) Wind Speed (mph) Wind Gusts (mph) Wind Dir Wind Cardinal Wave Height (m) Wave Dir Wave Cardinal Wave Period (s) Current Vel (mph) Current Dir Current Cardinal Sea Level (m) Beaufort
00:00 cloudy 7.1 10.4 10.7 15.0 N/A N/A 0.30 SE 3.30 0.20 NE -0.12 3
01:00 cloudy 7.0 10.4 11.0 15.4 N/A N/A 0.30 E 3.25 0.10 N 0.24 3
02:00 cloudy 6.8 10.4 11.4 16.0 N/A N/A 0.32 E 3.15 0.20 W 0.39 3
03:00 cloudy 6.8 10.4 11.6 16.2 N/A N/A 0.32 E 3.10 0.60 W 0.20 3
04:00 partlycloudy_night 6.7 10.4 11.6 16.2 N/A N/A 0.32 E 3.10 0.70 W -0.29 3
05:00 partlycloudy_night 6.4 10.4 12.1 16.9 N/A N/A 0.30 E 3.15 0.60 W -0.88 3
06:00 partlycloudy_night 6.1 10.4 13.2 18.5 N/A N/A 0.30 E 3.15 0.30 W -1.30 4
07:00 partlycloudy_night 5.8 10.4 13.4 18.8 N/A N/A 0.28 E 3.10 0.20 NW -1.43 4
08:00 fair_night 5.4 10.4 12.1 16.9 N/A N/A 0.28 E 3.05 0.10 N -1.33 3
09:00 fair_day 4.9 10.4 11.6 16.2 N/A N/A 0.26 E 3.00 0.20 NE -1.08 3
10:00 fair_day 5.2 10.4 12.3 17.2 N/A N/A 0.26 E 2.95 0.30 NE -0.72 3
11:00 fair_day 5.8 10.4 13.4 18.8 N/A N/A 0.24 E 2.90 0.30 NE -0.30 4
12:00 fair_day 6.2 10.4 14.3 20.0 N/A N/A 0.24 E 2.85 0.20 NE 0.16 4
18:00 clearsky_night 5.5 10.4 9.4 13.2 N/A N/A 0.22 E 2.70 0.50 W -1.16 3
Thursday, 25 December 2025
Time Weather Air Temp (°C) Sea Temp (°C) Wind Speed (mph) Wind Gusts (mph) Wind Dir Wind Cardinal Wave Height (m) Wave Dir Wave Cardinal Wave Period (s) Current Vel (mph) Current Dir Current Cardinal Sea Level (m) Beaufort
00:00 fair_night 4.0 10.4 8.5 11.9 N/A N/A 0.30 E 2.65 0.30 NE -0.42 3
06:00 partlycloudy_day 3.5 10.4 10.1 14.1 N/A N/A 0.32 E 2.65 0.50 W -1.06 3
12:00 partlycloudy_day 4.5 10.3 12.1 16.9 N/A N/A 0.34 E 2.65 0.20 NE -0.13 3
18:00 clearsky_night 3.9 10.3 10.3 14.4 N/A N/A 0.36 E 2.70 0.70 W -0.83 3
Friday, 26 December 2025
Time Weather Air Temp (°C) Sea Temp (°C) Wind Speed (mph) Wind Gusts (mph) Wind Dir Wind Cardinal Wave Height (m) Wave Dir Wave Cardinal Wave Period (s) Current Vel (mph) Current Dir Current Cardinal Sea Level (m) Beaufort
00:00 clearsky_night 2.7 10.2 8.1 11.3 N/A N/A 0.30 E 2.55 0.30 NE -0.78 3
06:00 clearsky_day 2.0 10.2 6.3 8.8 N/A N/A 0.26 E 2.50 0.60 W -0.52 2
12:00 clearsky_day 4.2 10.2 7.4 10.4 N/A N/A 0.26 E 2.60 0.30 NE -0.43 2
18:00 fair_night 3.9 10.1 8.5 11.9 N/A N/A 0.22 NE 2.30 0.80 SW -0.19 3
Saturday, 27 December 2025
Time Weather Air Temp (°C) Sea Temp (°C) Wind Speed (mph) Wind Gusts (mph) Wind Dir Wind Cardinal Wave Height (m) Wave Dir Wave Cardinal Wave Period (s) Current Vel (mph) Current Dir Current Cardinal Sea Level (m) Beaufort
00:00 fair_night 3.5 10.1 8.5 11.9 N/A N/A 0.18 NE 2.20 0.30 NE -1.02 3
06:00 partlycloudy_day 3.4 10.1 10.1 14.1 N/A N/A 0.26 NE 2.40 0.70 SW -0.12 3
12:00 cloudy 5.9 10.1 13.4 18.8 N/A N/A 0.48 NE 2.85 0.20 E -0.86 4
18:00 clearsky_night 4.7 10.1 12.5 17.5 N/A N/A 0.44 NE 2.90 0.70 SW 0.22 3
Sunday, 28 December 2025
Time Weather Air Temp (°C) Sea Temp (°C) Wind Speed (mph) Wind Gusts (mph) Wind Dir Wind Cardinal Wave Height (m) Wave Dir Wave Cardinal Wave Period (s) Current Vel (mph) Current Dir Current Cardinal Sea Level (m) Beaufort
00:00 fair_night 4.8 10.1 10.3 14.4 N/A N/A 0.46 NE 2.90 N/A E -1.71 3
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