The best time to visit Oahu is from mid – April to early June or between September and mid – December . During these shoulder seasons , attractions are less crowded, festivals are plentiful and airfare and room rates are at their lowest.
There’s a dry season that corresponds to summer (Apr-Oct) and a rainy season in winter (Nov-Mar). It rains every day somewhere in the islands any time of the year, but the rainy season sometimes brings enough gray weather to spoil your tanning opportunities.
Oahu is generally drier on the Leeward Coast (west) and wetter and greener on the Windward Coast (east). The resort area of Waikiki and the surfing mecca of the North Shore offer pleasant weather year round.
Hawaii has semi-tropical weather. Temperatures usually range from 75-90 degrees year round in the daytime, and 70-80 degrees at night. Temperatures in the winter months may be a little cooler, where nighttime temperatures can sometimes fall into the 50’s.
The Best Time to Visit Oahu Rain typically falls overnight. December through February is the rainiest time of year, while June through August is the driest. Early August through early November sees the warmest ocean temperatures, and mid-January through mid-April has the coldest.
Hawaii’s Weather When it’s raining on one side of an island in Hawaii , though, the sun is usually shining on another, a short drive away. However, if the priority is to avoid heavy downpours in traditionally fun-in-the-sun locations such as Waikiki, Poipu, Kona and Kihei, the worst time to go is November through April.
Oahu Precipitation Map Unless you head mauka (inland) you’re not likely to experience a lot of rain on the island, even on the wetter windward (eastern) side. Most can be found in Honolulu or the Waikiki area, which only averages about 20″-40″ (50-102 cm) of rain annually.
In Honolulu , the summers are hot, oppressive, and dry; the winters are comfortable and humid; and it is windy and mostly clear year round. Over the course of the year, the temperature typically varies from 68°F to 87°F and is rarely below 63°F or above 89°F.
There’s a dry season that corresponds to summer (Apr–Oct) and a rainy season in winter (Nov–Mar). It rains every day somewhere in the islands at any time of the year, but the rainy season can bring enough gray weather to spoil your tanning opportunities.
Maui – The best sunshine is on West and South Maui. Oahu – Basically the southern and southwestern end of the island is the driest. Big Island – The Kohala Coast is super sunny year round where it only receives around 10 inches of rain each year.
Windward Oahu tends to receive more rain than elsewhere on the island as most storms approach from the east and drop their rain as they hit the mountains. The benefit of this rainfall is that Windward Oahu is the greenest and, arguably, loveliest part of the island. It also tends to be the windiest part of Oahu.
Oahu experiences a tropical, semi-arid climate . Summer is mostly dry and hot, with temperatures usually above 80 degrees Fahrenheit (27 degrees Celsius). Sometimes temperatures can exceed 90 degrees Fahrenheit (32 degrees Celsius), and very rarely, drop just below 60 degrees Fahrenheit (16 degrees Celsius).
There are only two seasons in Hawaii — Hawaiian tradition named them Kau (summer) and Hoolio (winter) —and it hardly ever drops below 75 degrees here (if it does , the locals start freezing). The summer season stretches from May to October and winter, the cooler, wetter season, lasts from November to April.