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Contents
- The climate of Naalehu
- The best time to visit Naalehu
- The worst time to visit Naalehu
- Spring weather in Naalehu
- Summer weather in Naalehu
- Autumn weather in Naalehu
- Winter weather in Naalehu
- 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 Naalehu
Naalehu, the southernmost district in the USA, lies within the climatic jurisdiction of the Köppen classification Cfb. This characterization signifies a marine west coast weather pattern with fair, warm summers. The distinctive marine climate reflects a close interaction between oceanic influences and weather patterns, manifesting as highly uniform temperatures across the whole year, rather moderate rainfall, and relatively high humidity levels.
Throughout the twelve months of the year, Naalehu does not experience extreme variations in temperature. The city experiences a temperature high averaging between 68.9°F (20.5°C) in February and 73.2°F (22.9°C) observed from July to September. A narrow temperature range also marks the minimum temperatures, with 64.8°F (18.2°C) in March to a peak of 70°F (21.1°C) in October.
In terms of precipitation, rainfall in Naalehu displays a higher degree of variability than temperatures, with the city receiving between 0.75" (19mm) and 1.81" (46mm). The months exhibiting the greatest proportion of rainfall fall between April and September, aligning with the prevalence of relative humidity, which touches its heights in those months, surpassing 80%.
Spring and summer record bountiful sunshine hours, whereas autumn and winter receive relatively less sunlight. An interesting anomaly in Naalehu's climate can be noted with its wind cluster trends. Instead of peaking in the generally windier winter months, the city's wind peaks from April to September.
Throughout the twelve months of the year, Naalehu does not experience extreme variations in temperature. The city experiences a temperature high averaging between 68.9°F (20.5°C) in February and 73.2°F (22.9°C) observed from July to September. A narrow temperature range also marks the minimum temperatures, with 64.8°F (18.2°C) in March to a peak of 70°F (21.1°C) in October.
In terms of precipitation, rainfall in Naalehu displays a higher degree of variability than temperatures, with the city receiving between 0.75" (19mm) and 1.81" (46mm). The months exhibiting the greatest proportion of rainfall fall between April and September, aligning with the prevalence of relative humidity, which touches its heights in those months, surpassing 80%.
Spring and summer record bountiful sunshine hours, whereas autumn and winter receive relatively less sunlight. An interesting anomaly in Naalehu's climate can be noted with its wind cluster trends. Instead of peaking in the generally windier winter months, the city's wind peaks from April to September.
The best time to visit Naalehu
Considering the mild and consistent temperature throughout the year in Naalehu, it is fair to say that any time of the year can be suitable for a visit. However, if the focus is narrowed to specific weather conditions, the months from May to July denote a time of increased allure. An equable amalgamation of sunshine, maximum temperatures in the warm and pleasant spectrum of the 70s°F, and lesser wind factors enhance the appeal of these months for sightseeing and outdoor explorations.
The worst time to visit Naalehu
Depending on individual preferences, the least appealing time to visit Naalehu may be from November to January. These months come with increased chances of rainfall, less sunshine hours, and marginally lower temperatures. Although the temperature change might be negligible for some, the lesser sunshine and unwelcoming wet conditions may deter outdoor activities and explorations.
Spring weather in Naalehu
Spring in Naalehu, spanning from March to May, carries mildly warm temperatures, with highs averaging around 69.5°F (20.8°C) and lows approximately 65.5°F (18.6°C). Rainfall levels tend to increase, particularly in May, which receives around 1.42" (36mm). However, the spring also brings in more sunlight, with daylight hours extending up to 13 hours.
Summer weather in Naalehu
Summers, extending from June to August, are moderately warm with the highs touch about 72.8°F (22.7°C) and the lows approximately 69.3°F (20.7°C). The months of July and August are particularly noted for being the warmest, with 1.73" (44mm) of rainfall in August being the highest for the year.
Autumn weather in Naalehu
From September to November, Autumn displays temperatures between 69.8°F (21°C) to 71.8°F (22.1°C) in the day and from 68.5°F (20.3°C) to 70°F (21.1°C) at night. This season brings showers with the rainfall approximately 1.56" (40mm) per month and rendering the humidity levels relatively high.
Winter weather in Naalehu
Winter in Naalehu, expressing itself from December through February, features highs of about 69.6°F (20.9°C) to 69.4°F (20.8°C) and lows from 64.9°F (18.3°C) to 66.6°F (19.2°C). It is noteworthy that the most minimal rainfall of the year is recorded in December with 1.3" (33mm) of precipitation.
Weather in January
January in Naalehu brings pleasant, balmy weather, starting the year with mild climatic conditions. The temperature sees a gradual rise from the cooler days of December. While dry conditions can occasionally be interspersed with rainfall, overall weather conditions invite outdoor activities. Weather in January »
Weather in February
As February emerges, Naalehu's climate remains much the same as January, marked by similar temperature and humidity levels. It also comes with a slight increase in rainfall, with observers recording up to 1.38" (35mm). Unlike its predecessor, February witnesses a bit more cloud cover and a slightly higher UV index. Weather in February »
Weather in March
Compared to February, March in Naalehu sees a slight rise in cloud cover and humidity levels, which may result in slightly less sunshine hours. The month continues the trend of increasing rainfall with up to 1.57" (40mm) recorded. Weather in March »
Weather in April
April brings along subtle shifts in Naalehu's weather patterns. The rain falls a little more frequently compared to the previous month, signalling the onset of the wetter part of the year. On clearer days, the sunshine lasts for longer hours, and temperatures too, edge up slightly. Weather in April »
Weather in May
Entering into May, Naalehu experiences a general uptrend in most weather parameters. The comparatively warmer temperatures settle in, with the mercury touching highs of 71.1°F (21.7°C). There's also a noticeable increase in daylight hours. Weather in May »
Weather in June
June sees the continuation of the warmer trend in Naalehu. Overall, the weather conditions are similar to May, with just a couple of distinctions. One is the slight dip in rainfall, bringing drier days. The daylight hours extend more, giving more time to enjoy outdoor activities. Weather in June »
Weather in July
With the arrival of July, Naalehu reaches the peak of its warm weather. Precipitation comes down a notch from June, allowing more clear days for outdoor activities. As for the temperature, it takes a subtle leap, crossing the threshold of 72°F (22.2°C). Weather in July »
Weather in August
August in Naalehu offers the highest temperatures of the year, averaging around 73.2°F (22.9°C), where humidity stays steady at 81%. Rain becomes more frequent with rainfall amounting to 1.73" (44mm). Despite minimal shifts in cloud cover and daylight hours, the overall conditions remain quite similar to July. Weather in August »
Weather in September
As September unfolds, Naalehu witnesses a minute drop in temperature. The rainfall inches up slightly to around 1.81" (46mm), while the winds gain a little speed, averaging around 6.2mph (10km/h). Even with these slight modifications, there's a gentle balance maintained in all weather elements. Weather in September »
Weather in October
October in Naalehu brings a hint of autumnal charm without much change in temperature or humidity. Even though temperature and rainfall retain similarity with September, there's a noticeable decrease in daylight and sunshine hours. Weather in October »
Weather in November
The techno-colored sunlight of November in Naalehu brings a slight reduction in temperature. The rainfall decreases to 1.34" (34mm), offering more sunny days. Simultaneously, daylight and sunshine hours shorten further, giving a subtle hint of the approaching winter. Weather in November »
Weather in December
As winter sets in, Naalehu, unlike many other regions, escapes any harsh drops in temperature, maintaining the average around 70.5°F (21.4°C). Despite the slight increase in rainfall to 1.3" (33mm), the rest of the weather conditions, including wind speed, daylight hours, and UV Index, largely remain consistent with November. Weather in December »
Updated: Aug 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 driest month?
The month with the least rainfall is January, when the rain falls for 10.8 days and typically collects 0.75" (19mm) of precipitation.
How many days does it rain?
Throughout the year, there are 216.1 rainfall days, and 16.57" (421mm) of precipitation is accumulated.
What is the month with the lowest UV index in Naalehu?
January through April, November and December, with an average maximum UV index of 5, are months with the lowest UV index.
What are the coldest months?
The lowest temperatures are recorded in February, with averages reaching a high of 68.9°F (20.5°C) and a low of 64.9°F (18.3°C).
What is the least humid month?
The least humid month in Naalehu is February, with an average relative humidity of 73%.
What month has the most sunshine?
May has the most sunshine of the year, with an average of 10.7h of sunshine.
What are the months with the highest UV index?
The months with the highest UV index are May through October, with an average maximum UV index of 6.
What is the most humid month in Naalehu?
June through September, with an average relative humidity of 81%, are most humid months in Naalehu, Hawaii.
When are the longest days?
June has the longest days of the year, with an average of 13h and 18min of daylight.
What month is the hottest?
August and October are characterised by peak temperatures, with an average high of 73.2°F (22.9°C).
What is the wettest month?
The month with the most rainfall is September, when the rain falls for 21.5 days and typically aggregates up to 1.81" (46mm) of precipitation.
What are the months with the least sunshine?
November and December, with an average of 7.3h of sunshine, are months with the least sunshine.
What is the month with the shortest days?
The month with the shortest days is December, with an average of 11h and 0min of daylight.
Is there Daylight Saving Time (DST)?
Naalehu does not utilize Daylight Saving Time (DST). HST timezone is used over the entire year.
Average temperature
Naalehu, HI
The warmest months (with the highest average high temperature) are August and October (73.2°F).
The month with the lowest average high temperature is February (68.9°F).
The month with the highest average low temperature is October (70°F).
The coldest month (with the lowest average low temperature) is March (64.8°F).
Average pressure
Naalehu, HI
- Average pressure in January:
29.99"Hg - Average pressure in February:
30"Hg - Average pressure in March:
30.03"Hg - Average pressure in April:
30.04"Hg - Average pressure in May:
30.03"Hg - Average pressure in June:
30.01"Hg
- Average pressure in July:
29.99"Hg - Average pressure in August:
29.97"Hg - Average pressure in September:
29.96"Hg - Average pressure in October:
29.96"Hg - Average pressure in November:
29.98"Hg - Average pressure in December:
29.98"Hg
The month with the highest atmospheric pressure is April (30.04"Hg).
The months with the lowest atmospheric pressure are September and October (29.96"Hg).
Average wind speed
Naalehu, HI
- Average wind speed in January:
5.5mph - Average wind speed in February:
5.5mph - Average wind speed in March:
5.7mph - Average wind speed in April:
6.1mph - Average wind speed in May:
6.3mph - Average wind speed in June:
6mph
- Average wind speed in July:
5.8mph - Average wind speed in August:
6.1mph - Average wind speed in September:
6.2mph - Average wind speed in October:
6mph - Average wind speed in November:
5.7mph - Average wind speed in December:
5.3mph
The windiest month (with the highest average wind speed) is May (6.3mph).
The calmest month (with the lowest average wind speed) is December (5.3mph).
Average humidity
Naalehu, HI
The months with the highest relative humidity are June, July, August and September (81%).
The month with the lowest relative humidity is February (73%).
Average rainfall
Naalehu, HI
- Average rainfall in January:
0.75" - Average rainfall in February:
1.38" - Average rainfall in March:
1.57" - Average rainfall in April:
1.42" - Average rainfall in May:
1.42" - Average rainfall in June:
0.94"
- Average rainfall in July:
1.38" - Average rainfall in August:
1.73" - Average rainfall in September:
1.81" - Average rainfall in October:
1.54" - Average rainfall in November:
1.34" - Average rainfall in December:
1.3"
The wettest month (with the highest rainfall) is September (1.81").
The driest month (with the least rainfall) is January (0.75").
Average rainfall days
Naalehu, HI
- Average rainfall days in January:
10.8 days - Average rainfall days in February:
12.1 days - Average rainfall days in March:
16.2 days - Average rainfall days in April:
19.3 days - Average rainfall days in May:
21.1 days - Average rainfall days in June:
19.9 days
- Average rainfall days in July:
21.2 days - Average rainfall days in August:
21.8 days - Average rainfall days in September:
21.5 days - Average rainfall days in October:
20.4 days - Average rainfall days in November:
16.2 days - Average rainfall days in December:
15.6 days
The month with the highest number of rainy days is August (21.8 days).
The month with the least rainy days is January (10.8 days).
Average daylight / Average sunshine
Naalehu, HI
- Average daylight in January:
11h and 1min - Average daylight in February:
11h and 3min - Average daylight in March:
12h and 1min - Average daylight in April:
12h and 4min - Average daylight in May:
13h and 0min - Average daylight in June:
13h and 2min
- Average daylight in July:
13h and 1min - Average daylight in August:
12h and 5min - Average daylight in September:
12h and 1min - Average daylight in October:
11h and 4min - Average daylight in November:
11h and 1min - Average daylight in December:
11h and 0min
The month with the longest days is June (Average daylight: 13h and 18min).
The month with the shortest days is December (Average daylight: 11h and 0min).
- Average sunshine in January:
9h and 0min - Average sunshine in February:
9h and 3min - Average sunshine in March:
9h and 1min - Average sunshine in April:
9h and 1min - Average sunshine in May:
10h and 4min - Average sunshine in June:
10h and 2min
- Average sunshine in July:
10h and 3min - Average sunshine in August:
8h and 4min - Average sunshine in September:
8h and 4min - Average sunshine in October:
7h and 5min - Average sunshine in November:
7h and 2min - Average sunshine in December:
7h and 2min
The month with the most sunshine is May (Average sunshine: 10h and 42min).
The months with the least sunshine are November and December (Average sunshine: 7h and 18min).
Average sunshine days
Naalehu, HI
- Average sunshine days in January:
12.7 days - Average sunshine days in February:
10 days - Average sunshine days in March:
7.3 days - Average sunshine days in April:
3.5 days - Average sunshine days in May:
3.2 days - Average sunshine days in June:
4.3 days
- Average sunshine days in July:
4.5 days - Average sunshine days in August:
4 days - Average sunshine days in September:
3.5 days - Average sunshine days in October:
3.7 days - Average sunshine days in November:
6.3 days - Average sunshine days in December:
8.3 days
The month with the most sunshine days is January (12.7 days).
The month with the least sunshine days is May (3.2 days).
Average UV index
Naalehu, HI
The months with the highest UV index are May, June, July, August, September and October (UV index 6).
The months with the lowest UV index are January, February, March, April, November and December (UV index 5).
Average cloud cover
Naalehu, HI
The month with the most cloud cover is June (Cloud cover 31).
The month with the least cloud cover is January (Cloud cover 15).
Average visibility
Naalehu, 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).
Naalehu, Hawaii, USA
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