Climate and monthly weather forecast
Wahiawa, HI

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The climate of Wahiawa

Wahiawa, Hawaii, located in the United States, exhibits predominantly a Tropical wet and dry or savanna climate - a categorization under the Köppen climate classification as As. Given its geographical positioning, it experiences a distinct weather pattern unique to its locale. Throughout the year, Wahiawa manifests a noticeable contrast between seasons, characterized by different climatic variables that oscillate over the months.

The temperature in Wahiawa varies from 67.6°F (19.8°C) to 82.6°F (28.1°C) resulting in a mild yet tropical weather environment. However, a striking aspect of Wahiawa's climate is the minimal temperature deviation, implying a relatively stable climate throughout the year. Precipitation in Wahiawa is more than enough, with rainfall ranging from the lowest of 1.26" (32mm) in July, climbing gradually to its pinnacle at 2.6" (66mm) in October. It reinforces the tropical characteristics of the region. In terms of sunlight, Wahiawa receives around 10.8 to 13.4 daylight hours and 5.3 to 10.8 days of sunshine throughout the year.

Winds are relatively consistent, mainly ranging from 7.6mph (12.2km/h) to 10.2mph (16.4km/h), with gusts reaching their zenith at 13.5mph (21.7km/h). The pressure oscillates slightly around 30in, and visibility remains constant at six miles. The ultraviolet index teeters between 5 and 6, indicating a high level of solar radiation. Lastly, the cloud percentage indicates a slightly cloudy weather condition throughout the year, with the cloud cover fluctuating from 43% to 52%.

The best time to visit Wahiawa

Given the overall weather and climate conditions, the ideal time to visit Wahiawa would be from April through June. These months offer the most suitable conditions for outdoor activities. During this period, the average low temperature rests at a comfortable 69.8°F (21°C) to 72.7°F (22.6°C), while the high hovers within a pleasant range of 77.5°F (25.3°C) to 80.1°F (26.7°C) - perfect for exploring the natural beauty of Wahiawa. Apart from pleasant temperatures, the rainfall is also relatively mild, creating the perfect ambiance for sightseeing and outdoor endeavors.

The worst time to visit Wahiawa

It is advisable to avoid the period from October to November for visiting Wahiawa. Although temperatures are mild from 72.1°F (22.3°C) to 73.8°F (23.2°C), rainfall reaches its yearly climax, ascends to 2.6" (66mm) in October, slightly diminishing to 1.46" (37mm) in November. This level of precipitation might inhibit outdoor activities and overall travelling experience, making it the less desirable time for a visit.

Spring weather in Wahiawa

Spring, from March to May, in Wahiawa is marked by a gradual increase in temperatures. It ranges from 66.7°F (19.3°C) to 71.4°F (21.9°C) for low temperatures, while maximum temperatures reveal a similar upward trend from 75.6°F (24.2°C) to 79.2°F (26.2°C). Rainfall during this period is relatively moderate, from 1.69" (43mm) to 2.17" (55mm) adding to the pleasant ambiance of spring. Sunlight hours also rise, promising longer days.

Summer weather in Wahiawa

Summer temperatures in Wahiawa, from June to August, are pleasantly warm with the highs varying from 80.1°F (26.7°C) to 82.6°F (28.1°C) and lows from 72.7°F (22.6°C) to 73.9°F (23.3°C). Rainfall decreases slightly during summer, making it a good time for outdoor activities. Meanwhile, prevailing wind speeds range from 9.4mph (15.1km/h) to 10.2mph (16.4km/h).

Autumn weather in Wahiawa

Autumn, from September to November, witnesses a gradual decrease in temperature, falling to comfortable levels from 73.8°F (23.2°C) to 72.1°F (22.3°C). Despite this comfort in temperature, this season receives the heaviest rainfall peaking at 2.6" (66mm) in October. Therefore, despite the pleasant temperatures, the frequent showers may obstruct outdoor activities.

Winter weather in Wahiawa

Winter in Wahiawa, from December to February, experiences temperatures varying from 67.6°F (19.8°C) to 75.9°F (24.4°C). Even though it is winter, temperatures remain relatively mild compared to most other places. Rainfall during these months is moderate compared to autumn but higher than spring and summer. Winter also witnesses slightly reduced light hours and increased humidity, signifying a colder and wetter climate.

Weather in January

While the new year brings in a chilled mood in many parts of the United States, Wahiawa greets it with the warmth of its tropical climate. Showers are frequent but not too heavy, adding to the freshness of Hawaii's first month. Weather in January »

Weather in February

Rolling into February, the climate in Wahiawa displays only modest changes from January’s conditions. Occasional showers continue to drizzle the locales, retaining the lush greenery of the island. Subtle winds carry the ocean breeze, invigorating the atmosphere. Weather in February »

Weather in March

The equinox in March signals a change in Wahiawa's weather, creating an ambient mixture of slight warmth and refreshing showers. There is a gradual lengthening of the day, designed to make outdoor pursuits more enjoyable. The mild winds send delicate ripples through the island's palm trees. Weather in March »

Weather in April

The spirit of spring in April curates a pleasant weather in Wahiawa, characterized by a blend of sunshine and intermittent showers. The greeneries along the lanes continue to radiate thanks to the light rains. The tropical nature of the city ensures a warm, yet not too hot climate, perfect for sightseeing and hiking. Weather in April »

Weather in May

Come May, Wahiawa fully embraces summer and the weather reflects the seasonal shift. Rates of rainfall decrease, while sunny days increase, paving the way for plenty outdoor activities. This change launches a season ideal for exploring Oahu’s natural wonders. Weather in May »

Weather in June

June in Wahiawa sees a continuation of the summer traits, with increased sunshine hours painting the island city in vibrant hues. The month carries the charm of a tropical summer, marked by warm temperatures and slightly less frequency of rain showers. Weather in June »

Weather in July

July experiences a further increase in temperature, making it the perfect month to immerse in Wahiawa's beach culture. The warm Hawaiian sun coupled with an adequate breeze creates an ideal summer weather. A lesser need for a jacket comes as days and nights grow warmer, and summer outfits rule the city's fashion trends. Weather in July »

Weather in August

August continues the summer affair with consistent warm temperatures and increased daylight hours. The tropical weather conditions favor beach outings, picnics, and other outdoor activities. Rain showers occur, bringing respite from the predominant heat. Weather in August »

Weather in September

As September enters, the summer slowly starts receding, transitioning towards the tropical autumn of Hawaii. The temperatures remain towards the warmer side with the rain showers becoming slightly more frequent. Evening walks along the beachfront or trails in the lush green parks are popular with both tourists and locals. Weather in September »

Weather in October

October marks the onset of autumn in Wahiawa, bringing subtle changes in the weather pattern. The frequency of showers increases, imbuing the city with a fresh appeal. The temperatures begin to cool down from their summer highs, signaling the arrival of fall. Weather in October »

Weather in November

Wahiawa in November witnesses a further decrease in temperature, adding a hint of chill to the tropical climate. The month carries a mellower mood with the autumn leaves enhancing the city's beauty. The showers persist with secondary rainy season onset, maintaining the city’s picturesque greenery. Weather in November »

Weather in December

December wraps up the year in Wahiawa with a charming mix of warmth and showers. The Hawaiian winter emerges, though the degree of cold is merely moderate when compared to mainland U.S.A., resulting in an ideal climate for year-end celebrations and festivities. Weather in December »
Updated: Aug 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How many days does it rain?

Throughout the year, there are 252.2 rainfall days, and 22.09" (561mm) of precipitation is accumulated.

When is the lowest UV index?

January, February and December, with an average maximum UV index of 5, are months with the lowest UV index.

What is the coldest time of year?

The month of February sees the average lowest temperatures, reaching 75.6°F (24.2°C) at the peak and 66.7°F (19.3°C) at the low.

What are the most humid months?

February and December, with an average relative humidity of 77%, are most humid months.

What are the months with the highest UV index in Wahiawa?

The months with the highest UV index are March through November, with an average maximum UV index of 6.

When are the longest days?

With an average of 13h and 24min of daylight, June has the longest days of the year.

What month has the most sunshine?

With an average of 8.4h of sunshine, June has the most sunshine of the year.

What is the driest month in Wahiawa?

July is the month with the least rainfall in Wahiawa. Rain falls for 22.7 days and accumulates 1.26" (32mm) of precipitation.

What is the hottest time of year?

August, characterized by an average high temperature of 82.6°F (28.1°C) and a low temperature of 73.9°F (23.3°C), is generally the warmest month.

What is the least humid month?

September is the least humid month, with an average relative humidity of 73%.

What is the wettest month?

The month with the most rainfall is October, when the rain falls for 22.1 days and typically aggregates up to 2.6" (66mm) of precipitation.

What is the month with the least sunshine?

With an average of 5.6h of sunshine, November has the least sunshine of the year in Wahiawa.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 10h and 48min of daylight.

Is there Daylight Saving Time (DST)?

Wahiawa does not observe Daylight Saving Time (DST). HST timezone is used over the entire year.

Average temperature
Wahiawa, HI

Average temperature - Wahiawa, HI

The warmest month (with the highest average high temperature) is August (82.6°F).
The month with the lowest average high temperature is February (75.6°F).

The month with the highest average low temperature is September (74.3°F).
The coldest month (with the lowest average low temperature) is February (66.7°F).

Average pressure
Wahiawa, HI

Average pressure - Wahiawa, HI

The month with the highest atmospheric pressure is April (30.06"Hg).
The months with the lowest atmospheric pressure are September and October (29.97"Hg).

Average wind speed
Wahiawa, HI

Average wind speed - Wahiawa, HI

The windiest months (with the highest average wind speed) are June and July (10.2mph).
The calmest month (with the lowest average wind speed) is October (7.6mph).

Average humidity
Wahiawa, HI

Average humidity - Wahiawa, HI

The months with the highest relative humidity are February and December (77%).
The month with the lowest relative humidity is September (73%).

Average rainfall
Wahiawa, HI

Average rainfall - Wahiawa, HI

The wettest month (with the highest rainfall) is October (2.6").
The driest month (with the least rainfall) is July (1.26").

Average rainfall days
Wahiawa, HI

Average rainfall days - Wahiawa, HI

The month with the highest number of rainy days is August (23.8 days).
The month with the least rainy days is January (16 days).

Average daylight / Average sunshine
Wahiawa, HI

Average daylight / Average sunshine - Wahiawa, HI

The month with the longest days is June (Average daylight: 13h and 24min).
The month with the shortest days is December (Average daylight: 10h and 48min).

The month with the most sunshine is June (Average sunshine: 8h and 24min).
The month with the least sunshine is November (Average sunshine: 5h and 36min).

Average sunshine days
Wahiawa, HI

Average sunshine days - Wahiawa, HI

The month with the most sunshine days is January (10.8 days).
The month with the least sunshine days is August (3.3 days).

Average UV index
Wahiawa, HI

Average UV index - Wahiawa, HI

The months with the highest UV index are March, April, May, June, July, August, September, October and November (UV index 6).
The months with the lowest UV index are January, February and December (UV index 5).

Average visibility
Wahiawa, HI

Average visibility - Wahiawa, HI

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).

Wahiawa, Hawaii, USA

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