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Contents
- The climate of Poipu
- The best time to visit Poipu
- The worst time to visit Poipu
- Spring weather in Poipu
- Summer weather in Poipu
- Autumn weather in Poipu
- Winter weather in Poipu
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
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.
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 »
Updated: Jul 31, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the least humid month?
The least humid month in Poipu, Hawaii, is January, with an average relative humidity of 75%.
How many days does it rain?
In Poipu, during the entire year, the rain falls for 218.4 days and collects up to 22.13" (562mm) of precipitation.
When is the lowest UV index?
January through August, October through December, with an average maximum UV index of 6, are months with the lowest UV index.
What is the coldest month?
February and March are the coldest months, with an average high-temperature of 73.2°F (22.9°C).
What is the wettest month?
March is the month with the most rainfall. Rain falls for 18.6 days and accumulates 2.52" (64mm) of precipitation.
What is the driest month?
The month with the least rainfall is April, when the rain falls for 18.3 days and typically collects 1.3" (33mm) of precipitation.
What are the most humid months in Poipu?
The months with the highest humidity are June through August, October and December, with an average relative humidity of 77%.
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 9.7h of sunshine, June has the most sunshine of the year.
What is the warmest month?
The warmest temperatures in Poipu occur during September, when averages reach a peak of 79.7°F (26.5°C) and a low of 75.9°F (24.4°C).
When is the highest UV index?
With an average maximum UV index of 7, September is the month with the highest UV index.
What is the month with the least sunshine?
November has the least sunshine of the year, with an average of 6.2h of sunshine.
What is the month with the shortest days?
With an average of 10h and 48min of daylight, December has the shortest days of the year in Poipu.
Is there Daylight Saving Time (DST)?
Poipu does not utilize Daylight Saving Time (DST). HST timezone is used throughout the entire year.
Average temperature
Poipu, HI
The warmest month (with the highest average high temperature) is September (79.7°F).
The months with the lowest average high temperature are February and March (73.2°F).
The month with the highest average low temperature is September (75.9°F).
The coldest month (with the lowest average low temperature) is February (68.5°F).
Average pressure
Poipu, HI
- Average pressure in January:
30.01"Hg - Average pressure in February:
30.02"Hg - Average pressure in March:
30.06"Hg - Average pressure in April:
30.07"Hg - Average pressure in May:
30.05"Hg - Average pressure in June:
30.04"Hg
- Average pressure in July:
30.02"Hg - Average pressure in August:
30"Hg - Average pressure in September:
29.98"Hg - Average pressure in October:
29.98"Hg - Average pressure in November:
30.01"Hg - Average pressure in December:
30.01"Hg
The month with the highest atmospheric pressure is April (30.07"Hg).
The months with the lowest atmospheric pressure are September and October (29.98"Hg).
Average wind speed
Poipu, HI
- Average wind speed in January:
10mph - Average wind speed in February:
11.1mph - Average wind speed in March:
12mph - Average wind speed in April:
11.5mph - Average wind speed in May:
10.5mph - Average wind speed in June:
12.1mph
- Average wind speed in July:
12.3mph - Average wind speed in August:
12.1mph - Average wind speed in September:
11.1mph - Average wind speed in October:
10.5mph - Average wind speed in November:
12.1mph - Average wind speed in December:
11.2mph
The windiest month (with the highest average wind speed) is July (12.3mph).
The calmest month (with the lowest average wind speed) is January (10mph).
Average humidity
Poipu, HI
The months with the highest relative humidity are June, July, August, October and December (77%).
The month with the lowest relative humidity is January (75%).
Average rainfall
Poipu, HI
- Average rainfall in January:
1.57" - Average rainfall in February:
1.81" - Average rainfall in March:
2.52" - Average rainfall in April:
1.3" - Average rainfall in May:
1.57" - Average rainfall in June:
1.85"
- Average rainfall in July:
1.77" - Average rainfall in August:
1.89" - Average rainfall in September:
1.54" - Average rainfall in October:
2.05" - Average rainfall in November:
2.05" - Average rainfall in December:
2.2"
The wettest month (with the highest rainfall) is March (2.52").
The driest month (with the least rainfall) is April (1.3").
Average rainfall days
Poipu, HI
- Average rainfall days in January:
12.5 days - Average rainfall days in February:
15 days - Average rainfall days in March:
18.6 days - Average rainfall days in April:
18.3 days - Average rainfall days in May:
18.5 days - Average rainfall days in June:
18.8 days
- Average rainfall days in July:
20.9 days - Average rainfall days in August:
21.1 days - Average rainfall days in September:
18.7 days - Average rainfall days in October:
18.7 days - Average rainfall days in November:
19.2 days - Average rainfall days in December:
18.1 days
The month with the highest number of rainy days is August (21.1 days).
The month with the least rainy days is January (12.5 days).
Average daylight / Average sunshine
Poipu, HI
- Average daylight in January:
11h and 0min - Average daylight in February:
11h and 2min - Average daylight in March:
12h and 0min - Average daylight in April:
12h and 4min - Average daylight in May:
13h and 1min - Average daylight in June:
13h and 2min
- Average daylight in July:
13h and 2min - Average daylight in August:
12h and 5min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 4min - Average daylight in November:
11h and 1min - Average daylight in December:
10h and 5min
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).
- Average sunshine in January:
8h and 1min - Average sunshine in February:
7h and 4min - Average sunshine in March:
7h and 3min - Average sunshine in April:
7h and 5min - Average sunshine in May:
9h and 2min - Average sunshine in June:
9h and 4min
- Average sunshine in July:
8h and 4min - Average sunshine in August:
8h and 2min - Average sunshine in September:
8h and 4min - Average sunshine in October:
8h and 2min - Average sunshine in November:
6h and 1min - Average sunshine in December:
6h and 2min
The month with the most sunshine is June (Average sunshine: 9h and 42min).
The month with the least sunshine is November (Average sunshine: 6h and 12min).
Average sunshine days
Poipu, HI
- Average sunshine days in January:
12.8 days - Average sunshine days in February:
7.8 days - Average sunshine days in March:
6.3 days - Average sunshine days in April:
5.7 days - Average sunshine days in May:
6.7 days - Average sunshine days in June:
5 days
- Average sunshine days in July:
3.9 days - Average sunshine days in August:
2.9 days - Average sunshine days in September:
5.3 days - Average sunshine days in October:
6.3 days - Average sunshine days in November:
4.7 days - Average sunshine days in December:
6.7 days
The month with the most sunshine days is January (12.8 days).
The month with the least sunshine days is August (2.9 days).
Average UV index
Poipu, HI
The month with the highest UV index is September (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, October, November and December (UV index 6).
Average cloud cover
Poipu, HI
The month with the most cloud cover is March (Cloud cover 47).
The months with the least cloud cover are January and September (Cloud cover 38).
Average visibility
Poipu, 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).
Poipu, Hawaii, USA
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