April weather forecast
Halawa, HI

April witnesses a step up in the thermal scale of Halawa, nudging the lower limit to 63°F (17.2°C), and the upper limit to 79°F (26.1°C). In terms of precipitation, April brings relief as rainfall dwindles to 5.5" (140mm). The daylight duration witnesses a substantial increase this month, and the sunshine indexes rise in tandem. April registers an impressive surge in UV index figures as well. Ocean lovers find the sea temperature remaining stable, allowing for continual water exploits.

Temperature

Halawa transitions into April recording an average high-temperature of a still moderately hot 78.8°F (26°C), closely aligning with the preceding month's temperature. Throughout April, an average nighttime temperature of 62.6°F (17°C) is experienced in Halawa, Hawaii.

Rainfall

In April, in Halawa, Hawaii, the rain falls for 12 days. Throughout April, 5.51" (140mm) of precipitation is accumulated. Throughout the year, there are 116 rainfall days, and 54.96" (1396mm) of precipitation is accumulated.

Ocean temperature

January through April, with an average ocean temperature of 75.2°F (24°C), are months with the coldest seawater.
Note: For those with a heightened sensitivity to cold, sunshine, wind, and outside temperature make a big difference in enjoying a swim at 75.2°F (24°C). (Olympic swimming regulations state a water temperature of 77°F (25°C) to 82.4°F (28°C).)

Daylight

In Halawa, the average length of the day in April is 12h and 39min.
On the first day of April in Halawa, Hawaii, sunrise is at 6:19 am and sunset at 6:41 pm. On the last day of the month, sunrise is at 5:56 am and sunset at 6:51 pm HST.

Sunshine

In April, the average sunshine is 8h.

UV index

In April, the average daily maximum UV index is 11. A UV Index of 11, and more, symbolizes an extreme threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: The daily high UV index of 11 during April translates into the following recommendations:
Put into effect every precaution of importance, unprotected skin and eyes may get burns swiftly. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Avoid direct sun exposure for long periods, especially if prone to burns. Always apply a sunscreen with at least a 30 SPF. Alert! UV radiation becomes sharper due to reflections from sand and water.