Water Temperature of Apra Harbor in Santa Rita, GU

Current Water Temperature

86.0°F 30.0°C
Warm Warm & Relaxing
86.0°F
Frigid < 50°F
Cold 50°–60°
Cool 60°–70°
Comfortable 70°–80°
Warm 80°+

Water feels warm and inviting. Safe for extended immersion with virtually no thermal fatigue.

Measurement Time: Saturday, November 14, 2026, 6:24 PM ChST

Temperature Locations

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Local Points of Interest

Naval Base Guam; Sasa Bay; San Luis Beach; Mariana Islands; Philippine Sea; Pacific Ocean

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Apra Harbor

Station Name: Apra Harbor, Guam
Data Source: NOAA Tides and Currents

Elevation Above Sea Level: 13 feet

Sensor Depth: -5 feet

Nearest Address:
San Luis Road
Santa Rita, GU 96910
Sånta Rita-Sumai Municipali County

GPS Coordinates: 13.44339, 144.656361

Nearby Water Temperatures

Philippine Sea, Yigo, GU (19.3 mi)

Marine Weather for Apra Harbor in Santa Rita, GU

Marine Weather

Coastal & Marine Conditions
Open-Meteo Marine
4.9ft 1.5 m
Moderate Chop Noticeable waves and spray. Small craft exercise standard caution.
Wave Period 8.6s
Wave Direction 8° N
Swell Waves
4.3 ft
7.8s • 358° N
Wind Waves / Chop
1.6 ft
2.8s • 56° NE
Ocean Current
0.2 mph
0.2 kn • 0° N
Sea Surface Temp
84.7°F
Equivalent: 29.3°C

High & Low Tide Forecast

Rising (Flood)
Next Tide: High 10:00 PM (+2.9 ft)
0.0 ft (MSL) Sat, Nov 14 12 PM 6 PM 12 AM 6 AM 12 PM 6 PM Sun, Nov 15 ▼ Low 2:00 PM +0.5 ft ▲ High 10:00 PM +2.9 ft ▼ Low 3:00 AM +2.4 ft ▲ High 6:00 AM +2.7 ft ▼ Low 3:00 PM +0.6 ft NOW
Low Tide Sat, Nov 14
2:00 PM
+0.5 ft (0.14 m)
High Tide Sat, Nov 14
10:00 PM
+2.9 ft (0.87 m)
Low Tide Sun, Nov 15
3:00 AM
+2.4 ft (0.74 m)
High Tide Sun, Nov 15
6:00 AM
+2.7 ft (0.81 m)
Open-Meteo Tidal Model (Mean Sea Level MSL datum) • Times in station local timezone.

5-Day Marine Wave Forecast

Today
Nov 14
5.6 ft
9.7s • N
Sun
Nov 15
4.7 ft
7.9s • NNE
Mon
Nov 16
3.7 ft
7s • NE
Tue
Nov 17
3.9 ft
6s • ENE
Wed
Nov 18
4.1 ft
6.1s • ENE

Weather for Santa Rita, Guam

Current Weather

81.1°F
Mainly Clear
Conditions: Mainly Clear
Humidity: 85%
Feels Like: 87.4°F
Wind: ENE 12.8 mph
Wind Gusts: 23.2 mph
Pressure: 29.89 in
Precipitation: 0 in
Cloud Cover: 41%
Visibility: 9.1 mi
UV Index: 0

Five-Day Weather Forecast

Thunderstorm
Sat
H: 91°F
L: 80°F
Light Drizzle
Sun
H: 90°F
L: 80°F
Moderate Drizzle
Mon
H: 90°F
L: 79°F
Moderate Drizzle
Tue
H: 91°F
L: 80°F
Light Drizzle
Wed
H: 91°F
L: 81°F

Air Quality

EPA Index 1 • Good

Air quality is satisfactory, and air pollution poses little or no risk.

PM2.5
3.5 μg/m³
Good
PM10
6.3 μg/m³
Good
Ozone (O3)
43 μg/m³
Photochemical
NO2
0.1 μg/m³
Nitrogen Dioxide
SO2
0.2 μg/m³
Sulfur Dioxide
CO
109 μg/m³
Carbon Monoxide

Astronomical

Sun
11h 31m daylight
Sunrise 6:20 AM
Solar Noon 12:05 PM
Sunset 5:51 PM
Moon
Waxing Crescent • 21%
Moonrise 10:18 AM
Transit 4:01 PM
Moonset 9:46 PM

Best Times for Fishing or Hunting

Major Periods

3:06 AM - 5:36 AM
3:31 PM - 6:01 PM

Minor Periods

9:48 AM - 11:18 AM
9:16 PM - 10:46 PM
Action Rating:
Good Action 3/5
Saturday, November 14, 2026

Weather Forecast

Conditions: Thunderstorm
Average Temperature: 83.7°F
Average Humidity: 75%
Chance of Rain: 94%
Wind: 16.3 mph
UV Index: 7.6

Air Quality

EPA Index 1 • Good
PM2.5
5.5 μg/m³
Good
PM10
9.6 μg/m³
Good
Ozone (O3)
43.5 μg/m³
Photochemical
NO2
0.1 μg/m³
Nitrogen Dioxide
SO2
0.2 μg/m³
Sulfur Dioxide
CO
106.7 μg/m³
Carbon Monoxide

Astronomical

Sun
11h 31m daylight
Sunrise 6:20 AM
Solar Noon 12:05 PM
Sunset 5:51 PM
Moon
Waxing Crescent • 21%
Moonrise 10:18 AM
Transit 4:01 PM
Moonset 9:46 PM

Best Times for Fishing or Hunting

Major Periods

3:06 AM - 5:36 AM
3:31 PM - 6:01 PM

Minor Periods

9:48 AM - 11:18 AM
9:16 PM - 10:46 PM
Action Rating:
Good Action 3/5
Sunday, November 15, 2026

Weather Forecast

Conditions: Light Drizzle
Average Temperature: 84.6°F
Average Humidity: 76%
Chance of Rain: 69%
Wind: 17.2 mph
UV Index: 7.6

Air Quality

EPA Index 1 • Good
PM2.5
6.5 μg/m³
Good
PM10
11.4 μg/m³
Good
Ozone (O3)
41.8 μg/m³
Photochemical
NO2
0 μg/m³
Nitrogen Dioxide
SO2
0.3 μg/m³
Sulfur Dioxide
CO
108.3 μg/m³
Carbon Monoxide

Astronomical

Sun
11h 30m daylight
Sunrise 6:21 AM
Solar Noon 12:05 PM
Sunset 5:51 PM
Moon
Waxing Crescent • 31%
Moonrise 11:03 AM
Transit 4:49 PM
Moonset 10:38 PM

Best Times for Fishing or Hunting

Major Periods

3:55 AM - 6:25 AM
4:19 PM - 6:49 PM

Minor Periods

10:33 AM - 12:03 PM
10:08 PM - 11:38 PM
Action Rating:
Good Action 3/5
Monday, November 16, 2026

Weather Forecast

Conditions: Moderate Drizzle
Average Temperature: 84.4°F
Average Humidity: 78%
Chance of Rain: 74%
Wind: 14.1 mph
UV Index: 7.5

Air Quality

EPA Index 1 • Good
PM2.5
5.7 μg/m³
Good
PM10
9.9 μg/m³
Good
Ozone (O3)
43.8 μg/m³
Photochemical
NO2
0.1 μg/m³
Nitrogen Dioxide
SO2
0.3 μg/m³
Sulfur Dioxide
CO
106.1 μg/m³
Carbon Monoxide

Astronomical

Sun
11h 30m daylight
Sunrise 6:21 AM
Solar Noon 12:06 PM
Sunset 5:51 PM
Moon
First Quarter • 42%
Moonrise 11:44 AM
Transit 5:34 PM
Moonset 11:27 PM

Best Times for Fishing or Hunting

Major Periods

4:42 AM - 7:12 AM
5:04 PM - 7:34 PM

Minor Periods

11:14 AM - 12:44 PM
10:57 PM - 12:27 AM
Action Rating:
Fair Action 2/5
Tuesday, November 17, 2026

Weather Forecast

Conditions: Moderate Drizzle
Average Temperature: 84°F
Average Humidity: 78%
Chance of Rain: 59%
Wind: 17.1 mph
UV Index: 7.5

Air Quality

EPA Index 1 • Good
PM2.5
8 μg/m³
Good
PM10
13.6 μg/m³
Good
Ozone (O3)
33.3 μg/m³
Photochemical
NO2
0.1 μg/m³
Nitrogen Dioxide
SO2
0.4 μg/m³
Sulfur Dioxide
CO
102.8 μg/m³
Carbon Monoxide

Astronomical

Sun
11h 29m daylight
Sunrise 6:22 AM
Solar Noon 12:06 PM
Sunset 5:51 PM
Moon
First Quarter • 54%
Moonrise 12:24 PM
Transit 6:18 PM
Moonset 12:49 AM

Best Times for Fishing or Hunting

Major Periods

5:26 AM - 7:56 AM
5:48 PM - 8:18 PM

Minor Periods

12:19 AM - 1:49 AM
11:54 AM - 1:24 PM
Action Rating:
Good Action 3/5
Wednesday, November 18, 2026

Weather Forecast

Conditions: Light Drizzle
Average Temperature: 84.7°F
Average Humidity: 73%
Chance of Rain: 31%
Wind: 18.5 mph
UV Index: 7.5

Air Quality

EPA Index 1 • Good
PM2.5
9 μg/m³
Good
PM10
15.2 μg/m³
Good
Ozone (O3)
45.5 μg/m³
Photochemical
NO2
0 μg/m³
Nitrogen Dioxide
SO2
0.3 μg/m³
Sulfur Dioxide
CO
108 μg/m³
Carbon Monoxide

Astronomical

Sun
11h 29m daylight
Sunrise 6:22 AM
Solar Noon 12:06 PM
Sunset 5:51 PM
Moon
First Quarter • 65%
Moonrise 1:01 PM
Transit 7:01 PM
Moonset 12:16 AM

Best Times for Fishing or Hunting

Major Periods

6:10 AM - 8:40 AM
6:31 PM - 9:01 PM

Minor Periods

12:31 PM - 2:01 PM
11:46 PM - 1:16 AM
Action Rating:
Good Action 3/5
The times presented here are based upon the solunar theory, which is the idea that the movements of fish and other animals are affected by the location of the sun and moon. The major periods are believed to be the times of the greatest animal activity and occur when the moon is directly overhead or underfoot (lunar transits). The minor periods also see increased activity and occur when the moon is rising or setting. The strongest activity occurs during full or new moons, and the weakest during quarter or three quarter moons. This is indicated by the Action Rating.

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