Water Temperature of Apra Harbor in Santa Rita, GU

Current Water Temperature

86.5°F

Measurement Time: Thursday, September 18, 2025, 10:30 AM ChST

Today's Tides

High: September 18, 3:55 AM, 2.13 ft
 Low: September 18, 11:15 AM, -0.05 ft
High: September 18, 6:30 PM, 2.33 ft

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 / 4 meters

Sensor Depth: -4.6 feet / -1.4 meters

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)

Weather for Santa Rita, Guam

Current Weather

86.5°F
Partly cloudy
Conditions: Partly cloudy
Humidity: 75%
Feels Like: 99.4°F
Wind: SE 11 mph
Wind Gusts: 15 mph
Pressure: 29.93 in
Precipitation: 0 in
Cloud Cover: 50%
Visibility: 9 mi
UV Index: 7.2

Five Day Weather Forecast

Moderate rain
Thu
H: 82°F
L: 79°F
Moderate rain
Fri
H: 83°F
L: 80°F
Patchy rain nearby
Sat
H: 85°F
L: 80°F
Moderate rain
Sun
H: 84°F
L: 81°F
Heavy rain
Mon
H: 80°F
L: 79°F

Air Quality

PM2.5: 3.52 μg/m3
PM10: 5.74 μg/m3
Carbon Monoxide: 146.15 μg/m3
Nitrogen Dioxide: 0.19 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 26 μg/m3

Astronomical

Sunrise: 6:11 AM
Sun Transit: 12:15 AM
Sunset: 6:21 PM
Daylight: 12 hrs 10 mins
Moonrise: 2:51 AM
Moon Transit: 9:26 AM
Moonset: 3:59 PM
Moon Phase: Waning Crescent
Moon Illumination: 7.8%

Best Times for Fishing or Hunting

Major Periods

8:56 AM - 11:26 AM
4:03 AM - 6:33 AM

Minor Periods

3:29 PM - 4:59 PM
2:21 AM - 3:51 AM

Action Rating: 3 out of 5

Thursday, September 18, 2025

Weather Forecast

Conditions: Moderate rain
Average Temperature: 80.1°F
Average Humidity: 80%
Chance of Rain: 88%
Wind: 15.9 mph
UV Index: 2.9

Air Quality

AQI: 1 - Good
PM2.5: 3.74 μg/m3
PM10: 6.09 μg/m3
Carbon Monoxide: 146.89 μg/m3
Nitrogen Dioxide: 0.21 μg/m3
Sulphur Dioxide: 0.19 μg/m3
Ozone: 24.08 μg/m3

Astronomical

Sunrise: 6:11 AM
Sun Transit: 12:15 AM
Sunset: 6:21 PM
Daylight: 12 hrs 10 mins
Moonrise: 2:51 AM
Moon Transit: 9:26 AM
Moonset: 3:59 PM
Moon Phase: Waning Crescent
Moon Illumination: 7.8%

Best Times for Fishing or Hunting

Major Periods

8:56 AM - 11:26 AM
4:03 AM - 6:33 AM

Minor Periods

3:29 PM - 4:59 PM
2:21 AM - 3:51 AM

Action Rating: 3 out of 5

Friday, September 19, 2025

Weather Forecast

Conditions: Moderate rain
Average Temperature: 81.3°F
Average Humidity: 80%
Chance of Rain: 84%
Wind: 15.2 mph
UV Index: 2.8

Air Quality

AQI: 1 - Good
PM2.5: 4.36 μg/m3
PM10: 7.1 μg/m3
Carbon Monoxide: 145.04 μg/m3
Nitrogen Dioxide: 0.16 μg/m3
Sulphur Dioxide: 0.14 μg/m3
Ozone: 23.72 μg/m3

Astronomical

Sunrise: 6:11 AM
Sun Transit: 12:15 AM
Sunset: 6:20 PM
Daylight: 12 hrs 9 mins
Moonrise: 3:46 AM
Moon Transit: 10:15 AM
Moonset: 4:41 PM
Moon Phase: Waning Crescent
Moon Illumination: 2.8%

Best Times for Fishing or Hunting

Major Periods

4:53 AM - 7:23 AM
9:45 AM - 12:15 AM

Minor Periods

4:11 PM - 5:41 PM
3:16 AM - 4:46 AM

Action Rating: 2 out of 5

Saturday, September 20, 2025

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 82.5°F
Average Humidity: 77%
Chance of Rain: 89%
Wind: 17.2 mph
UV Index: 3

Air Quality

AQI: 1 - Good
PM2.5: 3.51 μg/m3
PM10: 5.82 μg/m3
Carbon Monoxide: 149.33 μg/m3
Nitrogen Dioxide: 0.19 μg/m3
Sulphur Dioxide: 0.14 μg/m3
Ozone: 26.24 μg/m3

Astronomical

Sunrise: 6:11 AM
Sun Transit: 12:14 AM
Sunset: 6:19 PM
Daylight: 12 hrs 9 mins
Moonrise: 4:38 AM
Moon Transit: 11:00 AM
Moonset: 5:18 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.3%

Best Times for Fishing or Hunting

Major Periods

5:38 AM - 8:08 AM
10:30 AM - 1:00 PM

Minor Periods

4:48 PM - 6:18 PM
4:08 AM - 5:38 AM

Action Rating: 3 out of 5

Sunday, September 21, 2025

Weather Forecast

Conditions: Moderate rain
Average Temperature: 82°F
Average Humidity: 75%
Chance of Rain: 83%
Wind: 10.1 mph
UV Index: 1.7

Air Quality

AQI: 1 - Good
PM2.5: 4.34 μg/m3
PM10: 7.3 μg/m3
Carbon Monoxide: 141.74 μg/m3
Nitrogen Dioxide: 0.14 μg/m3
Sulphur Dioxide: 0.19 μg/m3
Ozone: 25.85 μg/m3

Astronomical

Sunrise: 6:11 AM
Sun Transit: 12:14 AM
Sunset: 6:19 PM
Daylight: 12 hrs 8 mins
Moonrise: 5:27 AM
Moon Transit: 11:42 AM
Moonset: 5:55 PM
Moon Phase: New
Moon Illumination: 0.3%

Best Times for Fishing or Hunting

Major Periods

6:21 AM - 8:51 AM
11:12 AM - 1:42 PM

Minor Periods

5:25 PM - 6:55 PM
4:57 AM - 6:27 AM

Action Rating: 5 out of 5

Monday, September 22, 2025

Weather Forecast

Conditions: Heavy rain
Average Temperature: 79.6°F
Average Humidity: 82%
Chance of Rain: 84%
Wind: 12.3 mph
UV Index: 6

Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:11 AM
Sun Transit: 12:14 AM
Sunset: 6:18 PM
Daylight: 12 hrs 7 mins
Moonrise: 6:15 AM
Moon Transit: 12:23 AM
Moonset: 6:30 PM
Moon Phase: New
Moon Illumination: 2.9%

Best Times for Fishing or Hunting

Major Periods

7:02 AM - 9:32 AM
11:53 AM - 2:23 PM

Minor Periods

6:00 PM - 7:30 PM
5:45 AM - 7:15 AM

Action Rating: 5 out of 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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