Climate and monthly weather forecastKapaa, HI

The climate of Kapaa

Positioned in Hawaii, USA, the scenic town of Kapaa experiences conditions indicative of the Af Köppen climate classification. This signifies that Kapaa benefits from a tropical rainforest climate, hence, the weather is extremely constant, ensuring a generally warm environment throughout the year, regardless of the season.

Delving into Kapaa’s climate intricacies, there exists a noticeable uniformity in weather variables. The variation in monthly average maximum temperatures remains under 5°F (-15°C), oscillating from 73.2°F (22.9°C) to a peak of 79.7°F (26.5°C), demonstrating the minimal changes in the thermal environment. Similarly, a mere 6.3°F (-14.3°C) fluctuation occurs in the average monthly minimum temperature, ranging from 68.5°F (20.3°C) to 75°F (23.9°C).

Rainfall display a uniformity throughout the year as well, although, the wettest period tends to extend from March to August, with rainfalls of 2.52" (64mm) in March, gradually declining to 1.89" (48mm) in August. On the contrary, February and December, register lower precipitation levels of 1.81 and 2.2" (56mm) respectively.

Unique meteorological characteristics do surface for Kapaa, where August tends to be the hottest month of the year, displaying an average daily high temperature above 79.5°F (26.4°C), a relative rarity in Kapaa’s usual weather patterns. Furthermore, September, boasting temperatures between 79.5°F (26.4°C) and 75.9°F (24.4°C) and lower rainfall at just 1.54" (39mm), makes it the driest month, despite the high humidity of 76%.

The best time to visit Kapaa

Owing to pleasant climatic conditions throughout the year, visitors can enjoy their time in Kapaa almost every month. However, between April to June, the weather is particularly inviting. This period offers a delightful blend of moderate rainfall (from 1.3" (33mm) to 1.85" (47mm)), average maximum temperatures, and minimum temperatures. Moreover, the daylight hours increase, ranging from 12.7 to 13.5 hours, allowing more time to explore the beautiful Hawaiian outdoors.

The worst time to visit Kapaa

While there isn't an entirely unfavorable time to visit Kapaa due to its consistent climate, the city experiences its highest rainfall and cloud coverage from July to August, registering precipitations from 1.77" (45mm) up to 1.89" (48mm), coupled with cloud coverage around 44%. Plus, this period has the highest humidity, hovering from 77 to 77%. Consequently, potential visitors might want to consider these factors while planning their trips.

Spring weather in Kapaa

Spring in Kapaa, extending from March to May, greets the city with temperatures between 68.9°F (20.5°C) to 78.3°F (25.7°C), providing a warm and comfortable weather. Rainfall begins to decline during this period, starting at 2.52" (64mm) in March and reducing to 1.57" (40mm) by May. An increase in daylight hours is also noticeable, jumping from 12 hours in March to 13.2 hours in May, amplifying the opportunity to enjoy outdoor activities.

Summer weather in Kapaa

Following the gentle spring, the summer season in Kapaa, June through August, greets the residents and visitors with slightly higher temperatures ranging from 73.9°F (23.3°C) to 79.5°F (26.4°C). Despite the slight uptick in heat, the summer days are balanced with a rise in sea temperatures, starting at 78.4°F (25.8°C) in June and attaining 79.2°F (26.2°C) in August. Even though humidity is slightly higher during this period, the ample sunshine hours (9.7 in June) more than compensate for it.

Autumn weather in Kapaa

Autumn contributes to the pleasant climate in Kapaa. September to November witnesses marginal temperature decline, with minimum and maximum temperatures oscillating from 75.4°F (24.1°C) to 79.5°F (26.4°C) and 74.1°F (23.4°C) to 75.9°F (24.4°C), respectively. The rainfall pattern during this season fluctuates, beginning with 1.54" (39mm) in September, climbing to 2.05" (52mm) in October and not undergoing any change in November. Sunshine hours start at a higher level of 8.7 hours in September and decrease to 6.2 hours by November.

Winter weather in Kapaa

Winter in Kapaa, extending from December to February, offers residents and visitors mild weather conditions. Average temperatures range from 68.5°F (20.3°C) to 75.4°F (24.1°C), enabling outdoor activities even in chillier months, compared to numerous other destinations. While rainfall during this period is somewhat higher, from 1.81" (46mm) to 2.2" (56mm), the daylight hours lessen from 10.8 to 11.4 hours. Slight winds are influential, surging from 11.2mph (18km/h) in December to 11.1mph (17.9km/h) in February, maintaining cool and airy conditions.

Weather in January

Kapaa, Hawaii ushers in the new year with relatively stable weather conditions. January sees a comfortable range of temperatures from 69.6°F (20.9°C) to 74.7°F (23.7°C), which is lower compared to the preceding months. The moderate UV index at 6 ensures minimal risk of sunburn. Weather in January »

Weather in February

February in Kapaa, Hawaii continues January's weather pattern, but with a slight increase in rainfall. The February showers contribute to the year's second-highest rainfall of 1.81" (46mm). Despite the increased rainfall, temperatures and humidity remain relatively consistent with the previous month. Weather in February »

Weather in March

March brings Kapaa, Hawaii to the zenith of the wet season. This month records the highest rainfall for the year, with precipitation totalling 2.52" (64mm). Such rainfall levels are a signal for richer greenery and blooming of flowers. Weather in March »

Weather in April

In April, Kapaa, Hawaii welcomes a marked shift in its weather. This month marks the end of the wet season, with rainfall measuring 1.3" (33mm), which is a noticeable decrease from March. Days become longer, with daylight hours extending towards their peak as the year progresses. Weather in April »

Weather in May

May encapsulates the essence of late spring in Kapaa, Hawaii. Temperatures begin to climb, signifying the transition into warmer months. The noticeable decline in the number of rainfall days, coupled with longer daylight hours and burgeoning sea temperatures, provides an illusion of early summer. Weather in May »

Weather in June

June in Kapaa, Hawaii heralds the arrival of summer. Maximum temperatures soar to hit an annual high of 78.3°F (25.7°C), signaling increased beach activity. The UV index maintains its standard level at 6, rendering sun protection measures vital. Weather in June »

Weather in July

July is the key summer month in Kapaa, Hawaii, marked by rising temperatures. This is the month when the sea temperature warms up to peak at 78.7°F (25.9°C), making beach excursions a favorite pastime. The conditions continue to remain dry with a decrease in rainfall and moderate wind speeds reigning over the region. Weather in July »

Weather in August

August in Kapaa, Hawaii continues the summer trend, with maximum temperatures peaking at 79.7°F (26.5°C) - the highest of the year. The enticing warm sea temperatures and the longer sunshine hours make outdoor activities irresistible. Weather in August »

Weather in September

September brings subtle shifts to the weather in Kapaa, Hawaii. While retaining the warm temperatures from August, this month sees a decline in the daylight hours. The sea remains pleasantly warm, beckoning swimmers and surfers to its shore. Weather in September »

Weather in October

October imbues Kapaa, Hawaii's weather with a distinctive autumnal feel, while retaining the tropical essence. The slight dip in temperatures offsets the rising humidity. An uptick in rainfall signals the onset of the wet season, however, the decrease in daylight hours is somewhat countered by stable sunshine hours. Weather in October »

Weather in November

The penultimate month of the year, November, brings a fresh weather pattern to Kapaa, Hawaii. This month witnesses a slight increase in rainfall to approximately 2.05" (52mm). The fluctuating wind speeds add an element of unpredictability to the weather. Weather in November »

Weather in December

December in Kapaa, Hawaii welcomes the holiday season with typical cooler conditions. This month registers the lowest sea temperature at 76.6°F (24.8°C). As the year draws to a close, a gradual reduction in temperature and daylight hours is observed. Weather in December »