April weather forecastAgat, GU
April
Weather in April
April maintains the consistent weather pattern observed in Agat with no significant change in temperature or humidity. A continuation of increasing daylight hours provides more opportunities for enjoying outdoor activities, particularly between sunrise and sunset. April, however, shows a notable increase in rainfall totaling 2.44" (62mm) in comparison to the previous month. As we move towards May, the patterns shift towards the beginnings of a wetter and hotter summer with a slight increase in temperature and rainfall.Temperature
April's presence marks an average high-temperature of a still moderately hot 82.9°F (28.3°C), subtly varied from March's 82°F (27.8°C). Agat's nights in April maintain a consistent average of 81.1°F (27.3°C), demonstrating a minimal differential from its daytime temperature.Heat index
During April, the heat index is computed to be a hot 91.4°F (33°C). Greater safety measures are needed, risk of heat exhaustion and heat cramps is high. Continuous activity might trigger heatstroke.Understanding the heat index involves considering values for shaded locales with light wind. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', shows a temperature sensation when both heat and moisture conditions are combined. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
Humidity
January, March through May, October through December, with an average relative humidity of 78%, are the most humid months.Rainfall
In Agat, Guam, in April, it is raining for 19.3 days, with typically 2.44" (62mm) of accumulated precipitation. In Agat, during the entire year, the rain falls for 288.5 days and collects up to 60.08" (1526mm) of precipitation.Daylight
In Agat, the average length of the day in April is 12h and 26min.On the first day of April, sunrise is at 6:17 am and sunset at 6:33 pm. On the last day of the month, sunrise is at 6:00 am and sunset at 6:36 pm ChST.
Sunshine
In Agat, Guam, the average sunshine in April is 8.5h.UV index
The months with the highest UV index are January through August, October through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for ordinary individuals.Note: The UV index of 7 in April translates into these instructions:
Ward off overexposure. Defence against solar harm is crucial. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Stay sun-safe with clothing that is both closely woven and worn loosely.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Agat, GU
- Average high temperature in April: 82.9°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 April: 81.1°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).
Average pressure in April
Agat, GU
- Average pressure in April: 29.86"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).
Average wind speed in April
Agat, GU
- Average wind speed in April: 13.7mph
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).
Average humidity in April
Agat, GU
- Average humidity in April: 78%
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%).
Average rainfall in April
Agat, GU
- Average rainfall in April: 2.44"
The wettest month (with the highest rainfall) is September (10.28").
The driest month (with the least rainfall) is March (1.81").
Average rainfall days in April
Agat, GU
- Average rainfall days in April: 19.3 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).
Average daylight in April /
Average sunshine in April
Agat, GU
- Average daylight in April: 12h and 24min
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 April: 8h and 30min
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).
Average sunshine days in April
Agat, GU
- Average sunshine days in April: 5.8 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).
Average UV index in April
Agat, GU
- Average UV index in April: 7
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).
Average cloud cover in April
Agat, GU
- Average cloud cover in April: 40
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).
Average visibility in April
Agat, GU
- Average visibility in April: 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).





