TidalMap

Rio Vista Tide Times

California · Station 9415316 · Updated Aug 5, 2026

Rio Vista runs a mean tidal range of about 2.7 ft. This month the highest water, 4.5 ft, comes on the morning of Aug 10, and the lowest, a -0.2 ft minus tide, on the morning of Aug 11.

Nearest gauge measuring live water level: Port Chicago, Suisun Bay (9415144), about 20 mi away — high and low tides here run on average about 114 min later.

Predictedno live gauge

Next low tide 1.1 ft at 2:59 PM

Predicted

Monthly tide calendar

Flood & low finder Flood tide ≥ ft Low tide ≤ ft

🌊 Biggest flood tides at Rio Vista this month: Aug 5, Aug 6, Aug 7, Aug 9, Aug 10, Aug 11, Aug 12, Aug 13. These spring highs push water up into the grass and over the oyster rock — prime for poling into flooded marsh for tailing reds.

🔻 Negative (minus) low tides at Rio Vista this month: Aug 10, Aug 11, Aug 12, Aug 13. These drain the flats and expose the oyster rock — prime for sight-fishing and clamming.

August 2026

Sun

Mon

Tue

Wed

Thu

Fri

Sat

1L:1.6H:3.9L:0.3H:3.6

2L:1.5H:3.7L:0.4H:3.8

3L:1.4H:3.5L:0.6H:4.0

4L:1.3H:3.1L:0.8H:4.2

5🌗L:1.2H:2.7L:1.1H:4.4

6🌗L:1.0H:2.5L:1.4H:4.5

7🌗L:0.7H:2.4L:1.6H:4.5

8L:0.4H:2.6L:1.8

9H:4.5L:0.1H:2.8L:1.9

10H:4.5L:-0.1H:3.0L:1.8

11H:4.5L:-0.2H:3.2L:1.7

12🌑H:4.4L:-0.1H:3.4L:1.5

13🌑H:4.3L:-0.0H:3.5L:1.4

14🌑H:4.1L:0.2H:3.7

15🌑L:1.3H:3.8L:0.4H:3.9

16L:1.2H:3.5L:0.6H:4.0

17L:1.1H:3.2L:0.9H:4.0

18L:1.0H:2.9L:1.2H:4.0

19🌓L:0.9H:2.7L:1.5H:4.0

20🌓L:0.7H:2.6L:1.7H:4.0

21🌓L:0.5H:2.7L:1.9H:4.0

22🌓L:0.3H:2.9L:2.0

23H:4.0L:0.2H:3.1L:2.0

24H:4.0L:0.1H:3.2L:1.9

25H:4.0L:0.1H:3.3L:1.7

26H:3.9L:0.2H:3.4L:1.6

27🌕H:3.9L:0.3H:3.4L:1.4

28🌕H:3.9L:0.4H:3.5L:1.3

29🌕H:3.8L:0.5H:3.7L:1.2

30H:3.6L:0.6H:3.9

31L:1.0H:3.4L:0.8H:4.2

Best fishing times (solunar)

Major and minor solunar windows for Rio Vista — peak feeding activity is around the moon overhead/underfoot (majors) and moonrise/moonset (minors). Score is the day's activity coefficient (0–100).

Day	Major windows	Minor windows	Score
Today 🌗	5:25–7:25 AM 5:50–7:50 PM	10:50–12:50 AM 12:47–2:47 PM	33
Thu Aug 6 🌗	6:21–8:21 AM 6:46–8:46 PM	— 2:02–4:02 PM	42
Fri Aug 7 🌗	7:21–9:21 AM 7:46–9:46 PM	11:33–1:33 AM 3:16–5:16 PM	55
Sat Aug 8 🌘	8:25–10:25 AM 8:50–10:50 PM	12:27–2:27 AM 4:25–6:25 PM	67
Sun Aug 9 🌘	9:30–11:30 AM 9:55–11:55 PM	1:32–3:32 AM 5:23–7:23 PM	78
Mon Aug 10 🌘	10:32–12:32 PM 10:57–12:57 AM	2:44–4:44 AM 6:11–8:11 PM	86
Tue Aug 11 🌘	11:31–1:31 PM 11:56–1:56 AM	4:00–6:00 AM 6:50–8:50 PM	92

Predictions & observations: NOAA CO-OPS station 9415316. Solunar windows computed from the moon's position for this location. Times shown in the station's local time. Not for navigation.

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