Climate and monthly weather forecastPoipu, HI

The climate of Poipu

Located in the tropical region, Poipu, Hawaii, USA, experiences a predominantly Tropical wet and dry or savanna climate, aptly denoted by the Köppen climate classification 'As'. The unique combination of geographical location and overall climate conditions fosters a year-round warm and humid environment.

A steady range in temperatures is observed throughout the year, especially on the higher side. Slight shifts in temperatures are witnessed, with highs oscillating from 73.2°F (22.9°C) in March to a peak of 79.7°F (26.5°C) witnessed in September, while lows show a similar pattern, oscillating from 68.5°F (20.3°C) in February to 75.9°F (24.4°C) in September. This consistent pattern indicates minimal temperature fluctuations, promoting a warm climate throughout the year.

The relative humidity levels hover at approximately 76-77% annually, amplifying the sensation of warmth. Rainfall patterns follow a somewhat fluctuating trend throughout the year, with the most prominent rainfall of 2.52" (64mm) noted in March and the least in April at 1.3" (33mm). However, consistent precipitation is observed, suggesting a wet climate overall. Wind patterns exhibit a slight increase from 10mph (16.1km/h) in January to 12.3mph (19.8km/h) in July. This gentle breeze adds to the overall comfort of the climate.

The best time to visit Poipu

Considering the warm tropical climate of Poipu and the steadiness of its yearly weather conditions, May through October emerges as an ideal period for a visit. During these months, temperatures range from a comfortable 70.9°F (21.6°C) to 79.7°F (26.5°C). Rainfall is relatively low with figures ranging from 1.57" (40mm) to 1.89" (48mm) per month, indicating a lesser chance of disruptions due to rain showers. The daylight hours are significantly longer, ranging from 12.7 hours in March to 13.5 hours in June, providing ample time for outdoor activities.

The worst time to visit Poipu

Despite its warm climate throughout the year, Poipu weather might be somewhat off-putting from February to March owing to the relatively low temperatures along with the highest rainfall of 2.52" (64mm) recorded in March.

Spring weather in Poipu

Spring in Poipu is marked with a mild increase in temperatures, ranging from 68.9°F (20.5°C) in March to 72.1°F (22.3°C) in May. However, rainfall also exhibits an increase during this period, peaking at 2.52" (64mm) in March then tapering off to 1.57" (40mm) in May. Daylight and sunshine hours remain relatively stable during this season, offering approximately 12 to 13.2 hours of daylight and around 7.5 to 9.3 hours of sunshine respectively.

Summer weather in Poipu

June through August in Poipu is typical summer with warm temperatures escalating from 78.3°F (25.7°C) in June to 79.5°F (26.4°C) in August. July has a slight drop; however, it still offers a warm temperature of 79°F (26.1°C). Rainfall sees a mild increase from 1.85" (47mm) to 1.89" (48mm) from June to August. Longer daylight hours, peaking at 13.5 hours in June, and increased sunshine hours (9.7 hours in June), are characteristic of the summer season in Poipu.

Autumn weather in Poipu

Autumn in Poipu reveals slightly cooler temperatures, with ranges from 75.9°F (24.4°C) in September to 74.1°F (23.4°C) in November. During this season, rainfall shows an increment from 1.54" (39mm) to 2.05" (52mm). Daylight and sunshine hours start to recede gradually, signifying the end of longer days. Nonetheless, an average of about 12 to 11.1 daylight hours and up to 8.7 hours of sunshine are still conducive to outdoor activities.

Winter weather in Poipu

Winter in Poipu is mild when compared to many regions, with temperatures ranging from 75.4°F (24.1°C) in December to 73.2°F (22.9°C) in February. During the winter months, rainfall is noted to be slightly more, around 2.2" (56mm) in December to 1.81" (46mm) in February. This season is marked by the least daylight hours, with 10.8 to 11.4 hours, while sunshine hours dwindle to around 6.4 to 7.7 hours, indicating shorter days.

Weather in January

Starting the year, Poipu witnesses a moderate-emergency situation with a significant amount of sunlight. The change in temperature remains benign, showing a narrow margin compared to the preceding or following month. Humidity, daylight, and UV index present a balanced nature, ensuring mild weather conditions. Weather in January »

Weather in February

In February, Poipu’s weather remains faithful to the general trend set in January, despite slight variations in certain parameters. Sunshine duration reduces mildly as compared to January, whilst the wind speed fortifies a bit more. Weather in February »

Weather in March

A transition into a wetter climate becomes evident in March as Poipu navigates through the summer. From February to March, the city sees its highest jump in rainfall, increasing from 1.81" (46mm) to a notable 2.52" (64mm). Well-distributed cloud cover ensures a balanced sunlight exposure, thus guarding against any harsh UV impact. Weather in March »

Weather in April

Coming into April, the rainfall volume begins to withdraw, paving the way for more sunshine hours during the day. The relaxed climatic variance from the previous month makes it a favourable time for beach and coastal activities. The near-perfect visibility, coupled with gentle winds, complements the holiday-like weather in this Hawaiian city. Weather in April »

Weather in May

May sees a return of the rainfall, but it balances out with the extended daylight hours in the month. As temperatures rise, the difference between the maximum and minimum temperatures widening suggests the onset of summer. Wind speeds fall within comfortable bounds, sustaining the pleasant weather conditions for outdoor activities. Weather in May »

Weather in June

Weather progression through the month of June varies less from May, retaining the summer mood in Poipu, with a few twists. The consistent climate supports a variety of outdoor adventures, from mountain hikes to waterfront strolls. Weather in June »

Weather in July

July stands out as the warmest month, with the highest maximum and minimum temperatures of 79°F (26.1°C) and 75°F (23.9°C) respectively. The city experiences a slight increase in humidity, providing a typical tropical feel. Despite the subtle variations in wind speed and daylight hours, the overall weather pattern supports an array of beach adventures. Weather in July »

Weather in August

As Poipu transitions into August, weather elements persist with a smooth follow-up from July. The thermal range stays at a summer peak, making it another hot month. Despite the significant sunshine hours per day, a surge in rainfall and elevated humidity adds to the tropical climate narrative. Weather in August »

Weather in September

The weather in September takes an interesting turn when rainfall decreases to 1.54" (39mm), the lowest in the second half of the year. Temperatures sustain the hot summer trend, while the daylight starts receding gradually. Even though cloud cover reduces from August to September, humidity levels maintain stability. Weather in September »

Weather in October

October replicates the previous month’s weather trend with minor iterations in Poipu. The temperature shows a gradual decline, marking the beginning of the end of summer. Synchronized harmony between pressure, wind, and humidity offers a docile climate in the city. Weather in October »

Weather in November

November brings along further contraction in daylight hours, although the average sunshine hours witness only a marginal retreat. Intermittent showers throughout the month characterize the city’s weather as rainfall persists at 2.05" (52mm), unchanged from October. Weather in November »

Weather in December

The end of the year witnesses another surge in rainfall to 2.2" (56mm), the highest monthly average for the whole year. As December approaches, declines are observable in temperature, daylight, and sunshine hours, marking the onset of winter. Weather in December »