Big Rivermouth (Mendocino) Surf Report

Current surf conditions for Big Rivermouth (2025-09-15)
Wave height * 4.5ft / 1.3m
Swell period 8s
Swell direction °
Wind ° 10mph / 16km/h
Weather Fog 21°C / 70°F
Sea temp 15°C / 59°F
* Wave size is face height of set waves.
Big Rivermouth surf map

10 day Big Rivermouth surf forecast

Mon

15/Sep
3.5ft

3

7

1
  • Low 1:44am
  • High 8:58am
  • Low 1:22pm
  • High 7:22pm

Tue

16/Sep
3ft

4

4

5
  • Low 2:43am
  • High 9:43am
  • Low 2:32pm
  • High 8:31pm

Wed

17/Sep
3.5ft

4

8

2
  • Low 3:32am
  • High 10:19am
  • Low 3:29pm
  • High 9:29pm

Thu

18/Sep
5.5ft

5

6

5
  • Low 4:14am
  • High 10:51am
  • Low 4:18pm
  • High 10:20pm

Fri

19/Sep
4ft

2

7

5
  • Low 4:50am
  • High 11:19am
  • Low 5:02pm
  • High 11:07pm

Sat

20/Sep
3ft

2

7

6
  • Low 5:23am
  • High 11:45am
  • Low 5:42pm
  • High 11:51pm

Sun

21/Sep
4ft

1

9

2
  • Low 5:53am
  • High 12:10pm
  • Low 6:21pm

Mon

22/Sep
4ft

4

8

2
  • High 12:35am
  • Low 6:22am
  • High 12:34pm
  • Low 6:59pm

Tue

23/Sep
4ft

2

10

5
  • High 1:19am
  • Low 6:50am
  • High 12:58pm
  • Low 7:38pm

Mon 15th Sep

Surf report for Mon 15/09
  Wave size Primary swell Direction Period Wind direction Wind speed Weather
5:00 4.5ft 7ft 8s 4mph (3mph) weather symbol 13°C/56°F
8:00 4.5ft 6.9ft 8s 3mph (4mph) weather symbol 14°C/58°F
11:00 4ft 6.7ft 8s 6mph (2mph) weather symbol 20°C/67°F
14:00 3.5ft 6.3ft 9s 7mph (6mph) weather symbol 18°C/65°F
17:00 3.5ft 5.9ft 9s 6mph (6mph) weather symbol 18°C/65°F
20:00 3ft 5.7ft 12s 1mph (2mph) weather symbol 15°C/58°F
Tide times
Low 1:44am (-0.26m)
High 8:58am (4.24m)
Low 1:22pm (2.97m)
High 7:22pm (5.69m)
Daylight
First light06:30
Sunrise06:56
Sunset19:23
Dark19:50

Tue 16th Sep

Surf report for Tue 16/09
  Wave size Primary swell Direction Period Wind direction Wind speed Weather
5:00 3ft 5.2ft 19s 3mph (3mph) weather symbol 16°C/61°F
8:00 3ft 5.1ft 19s 4mph (4mph) weather symbol 17°C/62°F
11:00 3ft 4.9ft 18s 8mph (6mph) weather symbol 19°C/67°F
14:00 3ft 4.9ft 18s 4mph (6mph) weather symbol 18°C/65°F
17:00 3ft 4.9ft 18s 2mph (2mph) weather symbol 18°C/64°F
20:00 3ft 4.8ft 18s 5mph (5mph) weather symbol 14°C/58°F
Tide times
Low 2:43am (-0.33m)
High 9:43am (4.49m)
Low 2:32pm (2.61m)
High 8:31pm (5.71m)
Daylight
First light06:31
Sunrise06:57
Sunset19:21
Dark19:48

Wed 17th Sep

Surf report for Wed 17/09
  Wave size Primary swell Direction Period Wind direction Wind speed Weather
5:00 3.5ft 5ft 16s 3mph (3mph) weather symbol 14°C/57°F
8:00 3.5ft 5.1ft 16s 4mph (4mph) weather symbol 15°C/60°F
11:00 3.5ft 5.1ft 16s 7mph (5mph) weather symbol 21°C/69°F
14:00 3.5ft 5.2ft 16s 8mph (8mph) weather symbol 20°C/67°F
17:00 4ft 5.9ft 16s 6mph (7mph) weather symbol 19°C/66°F
20:00 4.5ft 6.6ft 13s 2mph (3mph) weather symbol 15°C/59°F
Tide times
Low 3:32am (-0.29m)
High 10:19am (4.74m)
Low 3:29pm (2.19m)
High 9:29pm (5.71m)
Daylight
First light06:32
Sunrise06:58
Sunset19:20
Dark19:46

Thu 18th Sep

Surf report for Thu 18/09
  Wave size Primary swell Direction Period Wind direction Wind speed Weather
5:00 4.5ft 7.2ft 12s 5mph (6mph) weather symbol 14°C/58°F
8:00 5ft 7.8ft 9s 5mph (6mph) weather symbol 15°C/58°F
11:00 5.5ft 8.6ft 9s 6mph (5mph) weather symbol 18°C/64°F
14:00 5.5ft 8.8ft 9s 6mph (6mph) weather symbol 17°C/63°F
17:00 5.5ft 8.9ft 10s 7mph (11mph) weather symbol 16°C/60°F
20:00 5ft 9ft 10s 5mph (7mph) weather symbol 14°C/58°F
Tide times
Low 4:14am (-0.13m)
High 10:51am (4.97m)
Low 4:18pm (1.78m)
High 10:20pm (5.64m)
Daylight
First light06:33
Sunrise06:59
Sunset19:18
Dark19:45

Fri 19th Sep

Surf report for Fri 19/09
  Wave size Primary swell Direction Period Wind direction Wind speed Weather
5:00 4.5ft 8.1ft 10s 3mph (4mph) weather symbol 14°C/58°F
8:00 4.5ft 7.7ft 10s 2mph (2mph) weather symbol 15°C/59°F
11:00 4ft 7.3ft 10s 5mph (2mph) weather symbol 18°C/65°F
14:00 4ft 6.9ft 10s 7mph (8mph) weather symbol 17°C/62°F
17:00 3.5ft 6.4ft 10s 6mph (7mph) weather symbol 17°C/63°F
20:00 3.5ft 6ft 10s 5mph (5mph) weather symbol 15°C/59°F
Tide times
Low 4:50am (0.16m)
High 11:19am (5.19m)
Low 5:02pm (1.41m)
High 11:07pm (5.50m)
Daylight
First light06:33
Sunrise07:00
Sunset19:16
Dark19:43

Sat 20th Sep

Surf report for Sat 20/09
  Wave size Primary swell Direction Period Wind direction Wind speed Weather
5:00 3ft 5.1ft 10s 2mph (3mph) weather symbol 15°C/58°F
8:00 3ft 5ft 10s 2mph (2mph) weather symbol 16°C/61°F
11:00 3ft 4.8ft 10s 6mph (4mph) weather symbol 19°C/66°F
14:00 3ft 4.6ft 11s 7mph (8mph) weather symbol 18°C/64°F
17:00 3ft 4.6ft 11s 3mph (5mph) weather symbol 19°C/66°F
20:00 4ft 4.7ft 14s 6mph (6mph) weather symbol 15°C/59°F
Tide times
Low 5:23am (0.54m)
High 11:45am (5.38m)
Low 5:42pm (1.10m)
High 11:51pm (5.29m)
Daylight
First light06:34
Sunrise07:01
Sunset19:15
Dark19:41

Sun 21st Sep

Surf report for Sun 21/09
  Wave size Primary swell Direction Period Wind direction Wind speed Weather
5:00 4ft 5.2ft 13s 4mph (4mph) weather symbol 15°C/59°F
8:00 4ft 5.3ft 13s 1mph (1mph) weather symbol 16°C/60°F
11:00 4ft 5.5ft 13s 6mph (5mph) weather symbol 19°C/66°F
14:00 4ft 5.6ft 12s 9mph (10mph) weather symbol 19°C/66°F
17:00 4ft 5.7ft 12s 11mph (17mph) weather symbol 18°C/64°F
20:00 4.5ft 5.9ft 12s 2mph (2mph) weather symbol 15°C/58°F
Tide times
Low 5:53am (0.98m)
High 12:10pm (5.51m)
Low 6:21pm (0.85m)
Daylight
First light06:35
Sunrise07:02
Sunset19:13
Dark19:40

Mon 22nd Sep

Surf report for Mon 22/09
  Wave size Primary swell Direction Period Wind direction Wind speed Weather
5:00 4ft 5.9ft 11s 4mph (4mph) weather symbol 14°C/58°F
8:00 4ft 5.6ft 11s 4mph (4mph) weather symbol 15°C/59°F
11:00 4ft 5.6ft 11s 8mph (7mph) weather symbol 19°C/67°F
14:00 4ft 5.5ft 11s 8mph (11mph) weather symbol 19°C/66°F
17:00 4ft 5.9ft 11s 11mph (17mph) weather symbol 17°C/63°F
20:00 4.5ft 6.4ft 11s 2mph (2mph) weather symbol 15°C/58°F
Tide times
High 12:35am (5.04m)
Low 6:22am (1.44m)
High 12:34pm (5.58m)
Low 6:59pm (0.68m)
Daylight
First light06:36
Sunrise07:03
Sunset19:11
Dark19:38

Tue 23rd Sep

Surf report for Tue 23/09
  Wave size Primary swell Direction Period Wind direction Wind speed Weather
5:00 4.5ft 6.5ft 13s 3mph (3mph) weather symbol 13°C/56°F
8:00 4.5ft 6.6ft 12s 2mph (2mph) weather symbol 14°C/57°F
11:00 4.5ft 6.5ft 12s 7mph (14mph) weather symbol 18°C/64°F
14:00 4ft 6.3ft 12s 10mph (19mph) weather symbol 18°C/64°F
17:00 4ft 6.2ft 12s 9mph (17mph) weather symbol 18°C/64°F
20:00 4ft 5.9ft 11s 5mph (6mph) weather symbol 15°C/59°F
Tide times
High 1:19am (4.76m)
Low 6:50am (1.89m)
High 12:58pm (5.56m)
Low 7:38pm (0.59m)
Daylight
First light06:37
Sunrise07:04
Sunset19:10
Dark19:37

Wed 24th Sep

Surf report for Wed 24/09
  Wave size Primary swell Direction Period Wind direction Wind speed Weather
5:00 3.5ft 5.3ft 11s 4mph (4mph) weather symbol 16°C/60°F
8:00 3.5ft 5.1ft 12s 2mph (2mph) weather symbol 16°C/60°F
11:00 4ft 5ft 15s 4mph (5mph) weather symbol 17°C/63°F
14:00 4ft 5.1ft 15s 5mph (8mph) weather symbol 17°C/62°F
17:00 4.5ft 5.4ft 14s 6mph (11mph) weather symbol 17°C/63°F
Tide times
High 2:06am (4.46m)
Low 7:18am (2.30m)
Daylight
First light06:38
Sunrise07:05
Sunset19:08
Dark19:35

Nearest buoys

Surf spots nearby

Not Magic Seaweed (MSW)

Although we look a bit like Magic Seaweed we are not MagicSeaweed as they no longer exist...