Threemile Slough Entrance, San Joaquin River Sea Conditions and Tide Table

Threemile Slough Entrance, San Joaquin River Sea Conditions table showing wave height, swell direction and period.

High and low tide times are also provided on the table along with the moon phase and forecast weather. Sunrise today is at 07:18 AM and sunset is at 04:50 PM.

Days 1–3 Weather Summary

Moderate rain (total 13mm), heaviest on Sun afternoon. Cool air temperatures (max 18°C on Sun morning, min 11°C on Mon afternoon). Wind will be generally light.

Days 4–6 Weather Summary

Heavy rain (total 59mm), heaviest during Tue night. Cool air temperatures (max 15°C on Wed morning, min 11°C on Tue night). Winds increasing (calm on Tue morning, strong winds from the SE by Wed night).

Days 7–9 Weather Summary

Heavy rain (total 26mm), heaviest during Fri night. Very mild (max 15°C on Sun afternoon, min 9°C on Sun night). Winds decreasing (fresh winds from the SE on Fri afternoon, calm by Sun night).

Days 10–12 Weather Summary

Light rain (total 2mm), mostly falling on Thu morning. Very mild (max 14°C on Wed afternoon, min 7°C on Mon night). Wind will be generally light.

Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
31
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
Wave Height Map
High Tide
3:55PM1.18m
6:16AM0.65m
4:31PM1.15m
6:57AM0.64m
5:08PM1.09m
7:36AM0.64m
5:49PM1.00m
8:13AM0.65m
6:35PM0.89m
8:48AM0.67m
7:30PM0.77m
9:24AM0.73m
8:34PM0.66m
10:01AM0.82m
9:49PM0.56m
10:41AM0.93m
11:15PM0.51m
11:25AM1.05m
00:48AM0.50m
12:14PM1.17m
2:15AM0.54m
1:05PM1.28m
3:29AM0.59m
Low Tide
9:48AM0.57m
11:38PM-0.04m
10:33AM0.57m
00:16AM-0.07m
11:18AM0.55m
00:54AM-0.09m
12:08PM0.52m
1:32AM-0.09m
1:06PM0.48m
2:10AM-0.06m
2:15PM0.43m
2:48AM-0.01m
3:31PM0.35m
3:25AM0.07m
4:43PM0.26m
4:04AM0.17m
5:50PM0.16m
4:44AM0.28m
6:52PM0.07m
5:26AM0.38m
7:51PM-0.01m
8:46PM-0.05m
Wave
height (m) 
direction
period (s) 
cloud
cloud
cloud
light rain
light rain
light rain
cloud
light rain
light rain
cloud
light rain
heavy rain
rain showers
light rain
rain showers
light rain
light rain
light rain
light rain
light rain
heavy rain
light rain
light rain
rain showers
clear
clear
clear
part cloud
clear
clear
part cloud
part cloud
cloud
part cloud
cloud
cloud
cloudy
cloudy
cloudy
light rain
light rain
light rain
cloudy
light rain
light rain
cloudy
light rain
heavy rain
rain shwrs
light rain
rain shwrs
light rain
light rain
light rain
light rain
light rain
heavy rain
light rain
light rain
rain shwrs
clear
clear
clear
some clouds
clear
clear
some clouds
some clouds
cloudy
some clouds
cloudy
cloudy
 km/h
5
SE
0
S
10
S
25
S
25
S
5
SSW
5
SW
5
WSW
5
WNW
5
E
5
SE
10
SW
5
SE
20
SE
40
SE
30
SSW
20
SSW
20
SSE
20
SE
30
SE
5
S
10
SE
15
SE
10
NNE
10
WNW
5
WNW
5
SSE
5
NNE
5
N
5
NNE
5
NNE
5
NE
5
NE
5
SSE
5
ESE
5
SSE
 mm 
1
4
3
3
2
5
26
1
1
20
3
2
1
2
5
14
1
2
2
max°C
14
15
17
18
16
16
14
13
11
13
14
14
15
15
15
13
13
12
13
13
13
14
12
11
14
15
12
11
12
9
10
11
10
13
14
13
Moonrise
8:13
8:57
9:34
10:06
10:34
10:59
11:23
11:47
12:13
12:43
1:19
2:05
Moonset
5:17
6:18
7:22
8:27
9:32
10:37
11:43
12:50
2:02
3:17
4:35
Sunrise
7:18
7:18
7:18
7:20
7:20
7:20
7:20
7:20
7:22
7:22
7:22
7:22
Sunset
4:50
4:50
4:51
4:51
4:52
4:52
4:52
4:53
4:53
4:54
4:55
4:57
Today's sea temperature in Threemile Slough Entrance, San Joaquin River is
11.1° C
(Statistics for 20 Dec 1981-2005 – mean: 12.3 max: 14.9 min: 10.6°C)
Issued (local time): 9 am Saturday 20 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest