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
Time
| Time | Wave Height (m) |
|---|---|
| Aug 18 21:00 | 0.30 |
| Aug 18 23:00 | 0.24 |
| Aug 19 01:00 | 0.22 |
| Aug 19 03:00 | 0.22 |
| Aug 19 05:00 | 0.24 |
| Aug 19 07:00 | 0.26 |
| Aug 19 09:00 | 0.28 |
| Aug 19 11:00 | 0.34 |
| Aug 19 13:00 | 0.36 |
| Aug 19 15:00 | 0.34 |
| Aug 19 17:00 | 0.30 |
| Aug 19 19:00 | 0.26 |
| Aug 19 21:00 | 0.22 |
| Aug 19 23:00 | 0.20 |
| Aug 20 01:00 | 0.26 |
| Aug 20 03:00 | 0.40 |
| Aug 20 05:00 | 0.42 |
| Aug 20 07:00 | 0.40 |
| Aug 20 09:00 | 0.36 |
| Aug 20 11:00 | 0.30 |
| Aug 20 13:00 | 0.24 |
| Aug 20 15:00 | 0.18 |
| Aug 20 17:00 | 0.16 |
| Aug 20 19:00 | 0.12 |
| Aug 20 21:00 | 0.08 |
| Aug 20 23:00 | 0.06 |
| Aug 21 01:00 | 0.06 |
| Aug 21 03:00 | 0.04 |
| Aug 21 05:00 | 0.10 |
| Aug 21 07:00 | 0.12 |
| Aug 21 09:00 | 0.12 |
| Aug 21 11:00 | 0.10 |
| Aug 21 13:00 | 0.10 |
| Aug 22 01:00 | 0.14 |
| Aug 22 13:00 | 0.04 |
| Aug 23 01:00 | 0.12 |
| Aug 23 13:00 | 0.06 |
| Aug 24 01:00 | 0.04 |
| Aug 24 13:00 | 0.02 |
Tuesday, 18 August 2026
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 21:00 |
|
13.8 | 16.3 | 14.5 | 20.3 | N/A | N/A | 0.30 | SW | 3.00 | 0.10 | S | -1.27 | 4 | ||
| 22:00 |
|
13.6 | 16.3 | 14.3 | 20.0 | N/A | N/A | 0.28 | SW | 3.00 | 0.30 | NE | -1.25 | 4 | ||
| 23:00 |
|
13.4 | 16.2 | 13.4 | 18.8 | N/A | N/A | 0.24 | SW | 2.95 | 0.60 | NE | -0.95 | 4 |
Wednesday, 19 August 2026
| 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 |
|
13.1 | 16.2 | 12.3 | 17.2 | N/A | N/A | 0.22 | SW | 2.95 | 0.70 | NE | -0.43 | 3 | ||
| 01:00 |
|
13.0 | 16.2 | 11.4 | 16.0 | N/A | N/A | 0.22 | SW | 2.95 | 0.60 | NE | 0.13 | 3 | ||
| 02:00 |
|
12.9 | 16.2 | 12.1 | 16.9 | N/A | N/A | 0.22 | SW | 2.95 | 0.40 | E | 0.57 | 3 | ||
| 03:00 |
|
12.9 | 16.2 | 10.7 | 15.0 | N/A | N/A | 0.22 | SW | 2.95 | 0.10 | E | 0.78 | 3 | ||
| 04:00 |
|
12.3 | 16.2 | 11.0 | 15.4 | N/A | N/A | 0.24 | SW | 3.00 | 0.30 | SW | 0.74 | 3 | ||
| 05:00 |
|
12.2 | 16.2 | 9.8 | 13.7 | N/A | N/A | 0.24 | SW | 3.05 | 0.50 | SW | 0.47 | 3 | ||
| 06:00 |
|
12.1 | 16.2 | 11.6 | 16.2 | N/A | N/A | 0.26 | SW | 3.10 | 0.60 | SW | 0.06 | 3 | ||
| 07:00 |
|
12.4 | 16.2 | 10.1 | 14.1 | N/A | N/A | 0.26 | SW | 3.10 | 0.60 | SW | -0.40 | 3 | ||
| 08:00 |
|
12.7 | 16.2 | 9.4 | 13.2 | N/A | N/A | 0.28 | SW | 3.15 | 0.50 | SW | -0.82 | 3 | ||
| 09:00 |
|
12.8 | 16.2 | 11.2 | 15.7 | N/A | N/A | 0.28 | SW | 3.15 | 0.40 | SW | -1.14 | 3 | ||
| 10:00 |
|
13.3 | 16.3 | 11.2 | 15.7 | N/A | N/A | 0.30 | SW | 3.20 | 0.10 | W | -1.28 | 3 | ||
| 11:00 |
|
13.8 | 16.3 | 11.6 | 16.2 | N/A | N/A | 0.34 | SW | 3.25 | 0.30 | NE | -1.14 | 3 | ||
| 12:00 |
|
13.4 | 16.3 | 12.1 | 16.9 | N/A | N/A | 0.36 | S | 3.25 | 0.50 | NE | -0.74 | 3 | ||
| 13:00 |
|
13.8 | 16.4 | 12.8 | 17.9 | N/A | N/A | 0.36 | S | 3.25 | 0.60 | NE | -0.21 | 4 | ||
| 14:00 |
|
14.5 | 16.4 | 13.6 | 19.0 | N/A | N/A | 0.34 | S | 3.20 | 0.40 | NE | 0.26 | 4 | ||
| 15:00 |
|
14.1 | 16.4 | 13.6 | 19.0 | N/A | N/A | 0.34 | S | 3.15 | 0.30 | NE | 0.53 | 4 | ||
| 16:00 |
|
14.3 | 16.4 | 9.2 | 12.9 | N/A | N/A | 0.32 | S | 3.10 | 0.20 | NW | 0.58 | 3 | ||
| 17:00 |
|
14.7 | 16.5 | 8.1 | 11.3 | N/A | N/A | 0.30 | S | 3.10 | 0.20 | W | 0.43 | 3 | ||
| 18:00 |
|
14.8 | 16.5 | 8.7 | 12.2 | N/A | N/A | 0.28 | S | 3.10 | 0.40 | W | 0.14 | 3 | ||
| 19:00 |
|
14.5 | 16.5 | 4.0 | 5.6 | N/A | N/A | 0.26 | S | 3.15 | 0.40 | SW | -0.22 | 1 | ||
| 20:00 |
|
13.4 | 16.5 | 4.0 | 5.6 | N/A | N/A | 0.24 | S | 3.20 | 0.60 | SW | -0.59 | 1 | ||
| 21:00 |
|
12.9 | 16.5 | 5.6 | 7.8 | N/A | N/A | 0.22 | S | 3.30 | 0.70 | SW | -0.93 | 2 | ||
| 22:00 |
|
12.4 | 16.5 | 9.8 | 13.7 | N/A | N/A | 0.20 | S | 3.40 | 0.50 | SW | -1.17 | 3 | ||
| 23:00 |
|
12.6 | 16.4 | 13.2 | 18.5 | N/A | N/A | 0.20 | S | 3.55 | 0.30 | SW | -1.18 | 4 |
Thursday, 20 August 2026
| 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 |
|
12.7 | 16.4 | 15.9 | 22.3 | N/A | N/A | 0.18 | S | 3.55 | 0.20 | NW | -0.89 | 4 | ||
| 01:00 |
|
12.6 | 16.4 | 18.1 | 25.3 | N/A | N/A | 0.26 | SE | 3.25 | 0.30 | NW | -0.40 | 4 | ||
| 02:00 |
|
12.4 | 16.4 | 21.9 | 30.7 | N/A | N/A | 0.32 | E | 2.85 | 0.40 | W | 0.07 | 5 | ||
| 03:00 |
|
12.4 | 16.3 | 23.3 | 32.6 | N/A | N/A | 0.40 | E | 2.60 | 0.60 | W | 0.38 | 5 | ||
| 04:00 |
|
12.1 | 16.3 | 24.4 | 34.2 | N/A | N/A | 0.40 | E | 2.65 | 0.70 | W | 0.46 | 5 | ||
| 05:00 |
|
11.8 | 16.3 | 23.0 | 32.2 | N/A | N/A | 0.42 | E | 2.80 | 0.80 | W | 0.35 | 5 | ||
| 06:00 |
|
11.6 | 16.3 | 20.8 | 29.1 | N/A | N/A | 0.42 | NE | 2.95 | 0.70 | W | 0.10 | 5 | ||
| 07:00 |
|
11.6 | 16.3 | 19.0 | 26.6 | N/A | N/A | 0.40 | NE | 2.95 | 0.60 | W | -0.23 | 4 | ||
| 08:00 |
|
11.9 | 16.3 | 18.1 | 25.3 | N/A | N/A | 0.38 | NE | 2.90 | 0.60 | W | -0.58 | 4 | ||
| 09:00 |
|
12.6 | 16.3 | 18.1 | 25.3 | N/A | N/A | 0.36 | NE | 2.85 | 0.50 | SW | -0.93 | 4 | ||
| 10:00 |
|
13.5 | 16.3 | 16.6 | 23.2 | N/A | N/A | 0.32 | NE | 2.90 | 0.40 | SW | -1.23 | 4 | ||
| 11:00 |
|
14.2 | 16.3 | 14.5 | 20.3 | N/A | N/A | 0.30 | NE | 2.95 | 0.30 | SW | -1.36 | 4 | ||
| 12:00 |
|
14.6 | 16.4 | 14.1 | 19.7 | N/A | N/A | 0.26 | NE | 3.00 | 0.20 | SE | -1.21 | 4 | ||
| 13:00 |
|
15.4 | 16.4 | 13.4 | 18.8 | N/A | N/A | 0.24 | E | 3.00 | 0.30 | SE | -0.80 | 4 | ||
| 14:00 |
|
16.0 | 16.5 | 11.9 | 16.7 | N/A | N/A | 0.20 | E | 2.95 | 0.20 | SE | -0.30 | 3 | ||
| 15:00 |
|
16.0 | 16.5 | 11.4 | 16.0 | N/A | N/A | 0.18 | E | 2.95 | 0.20 | SW | 0.09 | 3 | ||
| 16:00 |
|
15.9 | 16.6 | 11.9 | 16.7 | N/A | N/A | 0.16 | E | 2.90 | 0.40 | W | 0.26 | 3 | ||
| 17:00 |
|
15.6 | 16.6 | 13.6 | 19.0 | N/A | N/A | 0.16 | E | 2.85 | 0.50 | W | 0.23 | 4 | ||
| 18:00 |
|
15.0 | 16.6 | 14.1 | 19.7 | N/A | N/A | 0.14 | E | 2.90 | 0.60 | W | 0.05 | 4 | ||
| 19:00 |
|
14.8 | 16.6 | 13.9 | 19.5 | N/A | N/A | 0.12 | SE | 3.10 | 0.60 | W | -0.21 | 4 | ||
| 20:00 |
|
14.2 | 16.6 | 12.3 | 17.2 | N/A | N/A | 0.10 | S | 3.35 | 0.50 | W | -0.50 | 3 | ||
| 21:00 |
|
13.4 | 16.5 | 11.4 | 16.0 | N/A | N/A | 0.08 | S | 3.60 | 0.50 | W | -0.81 | 3 | ||
| 22:00 |
|
13.1 | 16.5 | 11.2 | 15.7 | N/A | N/A | 0.08 | SW | 3.75 | 0.40 | W | -1.10 | 3 | ||
| 23:00 |
|
13.2 | 16.4 | 11.2 | 15.7 | N/A | N/A | 0.06 | SW | 3.85 | 0.20 | NW | -1.31 | 3 |
Friday, 21 August 2026
| 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 |
|
13.0 | 16.4 | 11.0 | 15.4 | N/A | N/A | 0.06 | SW | 3.90 | 0.30 | NE | -1.30 | 3 | ||
| 01:00 |
|
12.2 | 16.3 | 11.6 | 16.2 | N/A | N/A | 0.06 | SW | 3.85 | 0.40 | E | -1.00 | 3 | ||
| 02:00 |
|
11.7 | 16.3 | 11.2 | 15.7 | N/A | N/A | 0.04 | SW | 3.70 | 0.40 | E | -0.54 | 3 | ||
| 03:00 |
|
11.4 | 16.3 | 11.2 | 15.7 | N/A | N/A | 0.04 | W | 3.45 | 0.20 | E | -0.12 | 3 | ||
| 04:00 |
|
11.0 | 16.3 | 11.2 | 15.7 | N/A | N/A | 0.06 | W | 3.10 | 0.20 | S | 0.13 | 3 | ||
| 05:00 |
|
10.7 | 16.3 | 10.5 | 14.7 | N/A | N/A | 0.10 | NW | 2.60 | 0.30 | SW | 0.19 | 3 | ||
| 06:00 |
|
10.3 | 16.3 | 10.5 | 14.7 | N/A | N/A | 0.12 | N | 2.30 | 0.50 | SW | 0.09 | 3 | ||
| 07:00 |
|
10.7 | 16.3 | 10.5 | 14.7 | N/A | N/A | 0.12 | N | 2.20 | 0.50 | SW | -0.09 | 3 | ||
| 08:00 |
|
11.6 | 16.3 | 11.6 | 16.2 | N/A | N/A | 0.12 | N | 2.25 | 0.50 | SW | -0.31 | 3 | ||
| 09:00 |
|
12.3 | 16.4 | 11.6 | 16.2 | N/A | N/A | 0.12 | N | 2.30 | 0.50 | W | -0.58 | 3 | ||
| 10:00 |
|
12.8 | 16.4 | 11.4 | 16.0 | N/A | N/A | 0.12 | N | 2.35 | 0.60 | W | -0.89 | 3 | ||
| 11:00 |
|
13.6 | 16.4 | 10.1 | 14.1 | N/A | N/A | 0.10 | N | 2.40 | 0.40 | W | -1.17 | 3 | ||
| 12:00 |
|
14.5 | 16.5 | 9.4 | 13.2 | N/A | N/A | 0.10 | N | 2.40 | 0.30 | NW | -1.29 | 3 | ||
| 13:00 |
|
15.3 | 16.5 | 10.5 | 14.7 | N/A | N/A | 0.10 | N | 2.35 | 0.30 | NE | -1.11 | 3 | ||
| 19:00 |
|
14.0 | 16.5 | 10.5 | 14.7 | N/A | N/A | 0.18 | NW | 2.20 | 0.40 | SW | 0.04 | 3 |
Saturday, 22 August 2026
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 01:00 |
|
10.9 | 16.3 | 7.6 | 10.6 | N/A | N/A | 0.14 | N | 2.70 | 0.10 | W | -1.23 | 2 | ||
| 07:00 |
|
10.8 | 16.2 | 7.2 | 10.1 | N/A | N/A | 0.06 | NW | 2.65 | 0.20 | SW | 0.01 | 2 | ||
| 13:00 |
|
15.3 | 16.4 | 5.8 | 8.1 | N/A | N/A | 0.04 | NW | 2.80 | 0.20 | SW | -1.16 | 2 | ||
| 19:00 |
|
14.6 | 16.5 | 10.7 | 15.0 | N/A | N/A | 0.20 | NW | 2.00 | 0.30 | SW | 0.16 | 3 |
Sunday, 23 August 2026
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 01:00 |
|
11.7 | 16.3 | 6.7 | 9.4 | N/A | N/A | 0.12 | NW | 2.45 | 0.30 | SW | -1.22 | 2 | ||
| 07:00 |
|
11.2 | 16.2 | 8.5 | 11.9 | N/A | N/A | 0.10 | NW | 2.45 | 0.10 | W | 0.05 | 3 | ||
| 13:00 |
|
15.8 | 16.5 | 5.6 | 7.8 | N/A | N/A | 0.06 | NW | 2.30 | 0.30 | SW | -1.09 | 2 | ||
| 19:00 |
|
15.4 | 16.7 | 3.4 | 4.8 | N/A | N/A | 0.04 | W | 2.35 | 0.10 | S | 0.21 | 1 |
Monday, 24 August 2026
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 01:00 |
|
11.2 | 16.5 | 2.5 | 3.5 | N/A | N/A | 0.04 | W | 2.45 | 0.50 | W | -0.95 | 1 | ||
| 07:00 |
|
10.6 | 16.5 | 1.8 | 2.5 | N/A | N/A | 0.02 | W | 4.20 | 0.20 | NE | -0.05 | 1 | ||
| 13:00 |
|
15.6 | 16.8 | 3.6 | 5.0 | N/A | N/A | 0.02 | SW | 4.90 | 0.40 | W | -0.81 | 1 | ||
| 19:00 |
|
15.4 | 17.2 | 0.9 | 1.3 | N/A | N/A | 0.02 | SW | 4.85 | 0.20 | NE | 0.18 | 0 |


