September weather forecast
Santa Rita, GU

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Weather in September

As September unfolds, Santa Rita prepares for gradual weather transition while still enduring high rainfall levels of 10.28" (261mm). Temperatures hold steady, and the allure of the sea remains, due to still warm waters. The daylight hours begin to recede slightly, creating shorter but still pleasant days. The landscape continues to soak up the nutrient-rich rain, resulting in lush green expanses around the city.

Temperature

Santa Rita transitions into September recording an average high-temperature of a still warm 84.4°F (29.1°C), closely aligning with the preceding month's temperature. In Santa Rita, the month of September brings a consistent average low-temperature of 82.8°F (28.2°C), slightly cooler than its daytime highs.

Heat index

During September, the heat index is appraised at a hot 93.2°F (34°C). Exercise enhanced safety steps, heat cramps and heat exhaustion are probable. Heatstroke could be a result of sustained activity.
Understand that the heat index values take into account shaded locations and mild winds. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', comes about by integrating the temperature readings with the humidity levels. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.

Humidity

In Santa Rita, the average relative humidity in September is 77%.

Rainfall

September is the month with the most rainfall. Rain falls for 28.1 days and accumulates 10.28" (261mm) of precipitation.

Ocean temperature

In Santa Rita, the average seawater temperature in September is 85.1°F (29.5°C).
Note: For swimming, diving, and similar activities, the water temperatures between 77°F (25°C) and 84.2°F (29°C) are considered delightful, allowing for extended periods of enjoyment without discomfort.

Daylight

The average length of the day in September in Santa Rita is 12h and 13min.
On the first day of September in Santa Rita, sunrise is at 6:09 am and sunset at 6:32 pm. On the last day of the month, sunrise is at 6:10 am and sunset at 6:11 pm ChST.

Sunshine

In September, the average sunshine is 7.9h.

UV index

September is the month with the lowest UV index, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for average individuals.
Note: In September, a daily maximum UV index of 6 leads to the following instructions:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Attention! UV radiation is ramped up when reflecting off sand and water surfaces.
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Frequently asked questions

How hot is September in Santa Rita?

The average high-temperature, in September, in Santa Rita, is 84.4°F (29.1°C), while the average low-temperature is 82.8°F (28.2°C). In September, the average heat index (a.k.a. 'real feel', 'feels like'), which represents the influence of relative humidity on air temperature, is appraised at 93.2°F (34°C).

What is the average humidity in September in Santa Rita?

The average relative humidity in September in Santa Rita, Guam, is 77%.

What is the rainiest month in Santa Rita?

The month with the most rainfall is September, when the rain falls for 28.1 days and typically aggregates up to 10.28" (261mm) of precipitation.

How much does it rain in Santa Rita in September?

In Santa Rita, in September, it is raining for 28.1 days, with typically 10.28" (261mm) of accumulated precipitation.

How warm is the water in September in Santa Rita?

In September, the average ocean temperature is 85.1°F (29.5°C). For swimming, diving, and other water activities, temperatures between 77°F (25°C) and 84.2°F (29°C) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

How many hours of daylight does Santa Rita have in September?

The average day length in September in Santa Rita, Guam, is 12h and 13min.

What time are sunrise and sunset in September in Santa Rita?

In September, on the first day of the month, sunrise is at 6:09 am and sunset at 6:32 pm. On the last day of the month, sunrise is at 6:10 am and sunset at 6:11 pm ChST.

How many hours of sunshine does Santa Rita have in September?

The average sunshine duration in September is 7.9h.

What is the month with the lowest UV index in Santa Rita?

The month with the lowest UV index in Santa Rita is September, with an average maximum UV index of 6.

What is the UV index reading in September in Santa Rita?

In September, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health threat from unsafe exposure to Sun's UV rays.

Average temperature in September
Santa Rita, GU

Average temperature in September - Santa Rita, GU
  • Average high temperature in September: 84.4°F

The warmest months (with the highest average high temperature) are July and August (84.7°F).
The month with the lowest average high temperature is February (81.7°F).

  • Average low temperature in September: 82.8°F

The month with the highest average low temperature is June (83.3°F).
The coldest month (with the lowest average low temperature) is February (79.7°F).

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Average pressure in September
Santa Rita, GU

Average pressure in September - Santa Rita, GU
  • Average pressure in September: 29.79"Hg

The month with the highest atmospheric pressure is February (29.88"Hg).
The months with the lowest atmospheric pressure are August, September and October (29.79"Hg).

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Average wind speed in September
Santa Rita, GU

Average wind speed in September - Santa Rita, GU
  • Average wind speed in September: 9.9mph

The windiest month (with the highest average wind speed) is February (16.3mph).
The calmest month (with the lowest average wind speed) is August (9.6mph).

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Average humidity in September
Santa Rita, GU

Average humidity in September - Santa Rita, GU
  • Average humidity in September: 77%

The months with the highest relative humidity are January, March, April, May, October, November and December (78%).
The month with the lowest relative humidity is August (76%).

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Average rainfall in September
Santa Rita, GU

Average rainfall in September - Santa Rita, GU
  • Average rainfall in September: 10.28"

The wettest month (with the highest rainfall) is September (10.28").
The driest month (with the least rainfall) is March (1.81").

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Average rainfall days in September
Santa Rita, GU

Average rainfall days in September - Santa Rita, GU
  • Average rainfall days in September: 28.1 days

The months with the highest number of rainy days are July and August (28.9 days).
The month with the least rainy days is February (17.5 days).

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Average sea temperature in September
Santa Rita, GU

Average sea temperature in September - Santa Rita, GU
  • Average sea temperature in September: 85°F

The best month for swimming (with the highest average sea temperature) is August (85.4°F).
The coldest month (with the lowest average sea temperature) is February (82°F).

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Average daylight in September /
Average sunshine in September
Santa Rita, GU

Average daylight in September / Average sunshine in September - Santa Rita, GU
  • Average daylight in September: 12h and 1min

The month with the longest days is June (Average daylight: 12h and 54min).
The month with the shortest days is December (Average daylight: 11h and 24min).

  • Average sunshine in September: 7h and 5min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is November (Average sunshine: 6h and 18min).

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Average sunshine days in September
Santa Rita, GU

Average sunshine days in September - Santa Rita, GU
  • Average sunshine days in September: 1.1 days

The month with the most sunshine days is March (6.6 days).
The month with the least sunshine days is September (1.1 days).

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Average UV index in September
Santa Rita, GU

Average UV index in September - Santa Rita, GU
  • Average UV index in September: 6

The months with the highest UV index are January, February, March, April, May, June, July, August, October, November and December (UV index 7).
The month with the lowest UV index is September (UV index 6).

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Average cloud cover in September
Santa Rita, GU

Average cloud cover in September - Santa Rita, GU
  • Average cloud cover in September: 45

The months with the most cloud cover are January, August and October (Cloud cover 46).
The months with the least cloud cover are May and June (Cloud cover 39).

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Average visibility in September
Santa Rita, GU

Average visibility in September - Santa Rita, GU
  • Average visibility in September: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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Santa Rita, Guam, USA

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