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Contents
- The climate of Kwajalein
- The best time to visit Kwajalein
- The worst time to visit Kwajalein
- Spring weather in Kwajalein
- Summer weather in Kwajalein
- Autumn weather in Kwajalein
- Winter weather in Kwajalein
- 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 rainfall
- Average rainfall days
- Average sea temperature
- Average daylight
- Average sunshine
- Average UV index
The climate of Kwajalein
Kwajalein, located in the Marshall Islands, boasts of a tropical rainforest climate, correctly delineated by the Köppen climate classification as Af. Being nestled in the Pacific Ocean, the weather conditions throughout the year are significantly affected by the maritime influences.
Consistency rules the temperature patterns in Kwajalein, with slim variances observed all year round. With an average high of 30°C (86°F) to 31°C (87.8°F) and an average low of 25°C (77°F), the narrow temperature range presents minimal fluctuations. Regular rainfall is a dominant feature of this tropical rainforest climate, with monthly averages falling in the range of 123mm (4.84") to 282mm (11.1"). Days of rainfall vary marginally, from a low of 16 to a high of 21 days each month.
Sunlight hours are fairly uniform, with an average of roughly 12 hours of daylight. Sunshine hours range from 16h to 21h, suggestive of a predominately sunny climate, while the sea maintains a steady temperature, oscillating between 28°C (82.4°F) to 29°C (84.2°F) throughout the year. Heat and sunlight combine to a UV index remaining around 12 for most of the year, cautioning residents and visitors to take adequate measures to protect against extreme sunburn.
Consistency rules the temperature patterns in Kwajalein, with slim variances observed all year round. With an average high of 30°C (86°F) to 31°C (87.8°F) and an average low of 25°C (77°F), the narrow temperature range presents minimal fluctuations. Regular rainfall is a dominant feature of this tropical rainforest climate, with monthly averages falling in the range of 123mm (4.84") to 282mm (11.1"). Days of rainfall vary marginally, from a low of 16 to a high of 21 days each month.
Sunlight hours are fairly uniform, with an average of roughly 12 hours of daylight. Sunshine hours range from 16h to 21h, suggestive of a predominately sunny climate, while the sea maintains a steady temperature, oscillating between 28°C (82.4°F) to 29°C (84.2°F) throughout the year. Heat and sunlight combine to a UV index remaining around 12 for most of the year, cautioning residents and visitors to take adequate measures to protect against extreme sunburn.
The best time to visit Kwajalein
Identifying the best time to visit Kwajalein depends primarily on an individual’s tolerance for rainfall. Despite a generally consistent climate, the amount of rainfall does fluctuate, presenting some options for the discerning traveller. Those seeking to evade exceedingly wet conditions would find the early part of the year, specifically from February to April, relatively drier, with rainfall amounts ranging from 123mm (4.84") to 198mm (7.8"). It is worthwhile mentioning that the sea temperature remains steady at 28°C (82.4°F) during these months, complementing the sun-soaked days and facilitating various water activities.
The worst time to visit Kwajalein
Considerations of the worst time to visit Kwajalein must likewise be calibrated to fit the individual’s preference or aversion to wet weather. The months between July and November, with rainfall amounts rising to 251mm (9.88") to 282mm (11.1"), can be categorised as excessively wet. Travellers whose activities might be hampered by increased rain may deem these months less favourable.
Spring weather in Kwajalein
Spring seasons in Kwajalein, from March to May, are marked by a gradual increase in overall rainfall from 140mm (5.51") to 229mm (9.02"). Temperatures during these months maintain the consistent pattern, with highs of 30°C (86°F) to 31°C (87.8°F) and lows of 25°C (77°F), while daylight increases from 12.1h to 12.5h. These months also mark a decrease in the UV index from 12 to 11.
Summer weather in Kwajalein
The summer months in Kwajalein, between June and August, are distinguished by a steady climb in rainfall, peaking at 263mm (10.35") in July. Sea temperatures warm slightly to 29°C (84.2°F), maintaining this through to September. Despite increased rainfall, sunshine remains abundant, with levels ranging between 16h to 20h.
Autumn weather in Kwajalein
Autumn in Kwajalein, from September to November, experiences the heaviest rainfall. Rainfall amounts hover between 270mm (10.63") to 282mm (11.1"), while the low temperature remains unchanged at 25°C (77°F). Daylight hours subtly decrease, with the latter part of autumn experiencing an average daylight of 11.9h.
Winter weather in Kwajalein
Winter in Kwajalein, stretching from December to February, witnesses a decline in rainfall to a low of 123mm (4.84") in February. Temperatures remain consistent, with no significant changes from the rest of the year. Daylight hours decrease marginally, resting at an average of 11.6h in December, before increasing again. The UV index also declines to 11 in December and 10 in February, reflecting diminished but still significant solar radiations.
Weather in January
Being the first month of the year, January sets the tone for the weather conditions on Kwajalein, Marshall Islands. Consistent and stable temperatures combined with a significant amount of rainfall characterize the month. The highest recorded rainfall in January is 164mm (6.46"), making it a month with substantial precipitation. Weather in January »
Weather in February
Comparatively, February follows January's trend with similar weather patterns. High temperatures and moderate rainfall define February in Kwajalein, Marshall Islands. Weather conditions, however, seem slightly milder than in January, with rainfall measuring up to 123mm (4.84"). Weather in February »
Weather in March
March progresses with little deviation from the established annual weather pattern. Generally, high temperatures persist with rainfall reciprocating between 123mm (4.84") in February to 140mm (5.51") in March. Weather conditions in Kwajalein, Marshall Islands, thus remain predictably warm and considerably wet during this period. Weather in March »
Weather in April
In line with the preceding months, April’s weather maintains the recurring theme of warm temperatures and significant rainfall. The rise from 140mm (5.51") in March to 198mm (7.8") in April indicates an increase in precipitation. Weather in April »
Weather in May
May presents a continuation of the prevailing weather conditions. The rainfall reaches a high of 229mm (9.02"), indicating another rise in precipitation. However, this heightened rainfall does not bring about a reduction in temperature for Kwajalein, Marshall Islands. Weather in May »
Weather in June
June marks the middle of the year with minor variations in weather conditions. With rainfall at a significant 228mm (8.98"), there is very little departure from May's weather pattern. June's record indicates it is a continuation of the previous few months, showing a trend towards a wetter climate for Kwajalein, Marshall Islands. Weather in June »
Weather in July
July's weather offers no surprises, following a stable weather pattern characterized by high heat and rainfall. Rainfall rises slightly to 263mm (10.35"), indicating a marginally wetter period compared to June. Despite fluctuations in precipitation, the climatic conditions in Kwajalein, Marshall Islands remain consistent. Weather in July »
Weather in August
The weather in August closely mirrors that of July. Precipitation figures clock at 251mm (9.88"), dropping from July's 263mm (10.35"), although maintaining a high level of rainfall. Kwajalein continues to experience warm temperatures combined with heavy rains. Weather in August »
Weather in September
September on Kwajalein, Marshall Islands continues to exhibit a tropical climate. The rainfall level recorded is 270mm (10.63"), marking an increase from August. Notably consistent weather conditions provide no drastic changes in temperature or UV index. Weather in September »
Weather in October
October unveils itself on Kwajalein, Marshall Islands, with continued warm temperatures and high precipitation levels. The rainfall hits a high of 282mm (11.1"), representing the highest precipitation level of the year. As with the previous months, high temperatures maintain the tropical environment in Kwajalein. Weather in October »
Weather in November
Following the rain-drenched October, November offers a slight respite with precipitation coming to a more moderate 246mm (9.69"). Indicative of the weather patterns throughout the year, November continues to be warm with substantial rainfall. Weather in November »
Weather in December
Closing the year, December continues the trend set by November with only slight deviations. The rainfall eases further to 211mm (8.31"), presenting a noticeable change from November's weather. Even so, high temperatures persist throughout December on Kwajalein maintaining the tropical climate. Weather in December »
[Resources]Frequently asked questions
What are the coldest months in Kwajalein?
January through May and December bring Kwajalein's average lowest temperatures, reaching a high of 30°C (86°F).
How much does it rain in Kwajalein?
Throughout the year, there are 224 rainfall days, and 2605mm (102.56") of precipitation is accumulated.
What months are the sea coldest in Kwajalein?
January through May and December, with an average sea temperature of 28°C (82.4°F), are months with the coldest seawater.
What month has the most sunshine in Kwajalein?
With an average of 21h of sunshine, January has the most sunshine of the year.
What is the driest month in Kwajalein?
February is the month with the least rainfall in Kwajalein. Rain falls for 19 days and accumulates 123mm (4.84") of precipitation.
What are the months with the highest UV index in Kwajalein?
February through October, with an average maximum UV index of 12, are months with the highest UV index.
What is the warmest month in Kwajalein?
In Kwajalein, the warmest months are June through November, registering an average high-temperature of 31°C (87.8°F).
What are the months with the warmest sea water in Kwajalein?
June through November, with an average sea temperature of 29°C (84.2°F), are months with the warmest seawater.
When are the longest days in Kwajalein?
June has the longest days of the year in Kwajalein, Marshall Islands, with an average of 12h and 36min of daylight.
What is the month with the least sunshine in Kwajalein?
The month with the least sunshine in Kwajalein is June, with an average of 16h of sunshine.
What is the wettest month in Kwajalein?
October is the month with the most rainfall in Kwajalein, Marshall Islands. Rain falls for 19 days and accumulates 282mm (11.1") of precipitation.
What is the month with the shortest days in Kwajalein?
December has the shortest days of the year in Kwajalein, with an average of 11h and 36min of daylight.
Is there Daylight Saving Time (DST) in Kwajalein?
Kwajalein, Marshall Islands, does not observe Daylight Saving Time (DST). +12 timezone is used throughout the entire year.
When is the lowest UV index in Kwajalein?
December is the month with the lowest UV index in Kwajalein, with an average maximum UV index of 10.
Average temperature
Kwajalein, Marshall Islands
The warmest months (with the highest average high temperature) are June, July, August, September, October and November (31°C).
The months with the lowest average high temperature are January, February, March, April, May and December (30°C).
The months with the highest average low temperature are January, February, March, April, May, June, July, August, September, October, November and December (25°C).
The coldest months (with the lowest average low temperature) are January, February, March, April, May, June, July, August, September, October, November and December (25°C).
Average rainfall
Kwajalein, Marshall Islands
- Average rainfall in January:
164mm - Average rainfall in February:
123mm - Average rainfall in March:
140mm - Average rainfall in April:
198mm - Average rainfall in May:
229mm - Average rainfall in June:
228mm
- Average rainfall in July:
263mm - Average rainfall in August:
251mm - Average rainfall in September:
270mm - Average rainfall in October:
282mm - Average rainfall in November:
246mm - Average rainfall in December:
211mm
The wettest month (with the highest rainfall) is October (282mm).
The driest month (with the least rainfall) is February (123mm).
Average rainfall days
Kwajalein, Marshall Islands
- Average rainfall days in January:
21 days - Average rainfall days in February:
19 days - Average rainfall days in March:
19 days - Average rainfall days in April:
18 days - Average rainfall days in May:
17 days - Average rainfall days in June:
16 days
- Average rainfall days in July:
19 days - Average rainfall days in August:
20 days - Average rainfall days in September:
18 days - Average rainfall days in October:
19 days - Average rainfall days in November:
18 days - Average rainfall days in December:
20 days
The month with the highest number of rainy days is January (21 days).
The month with the least rainy days is June (16 days).
Average sea temperature
Kwajalein, Marshall Islands
The best months for swimming (with the highest average sea temperature) are June, July, August, September, October and November (29°C).
The coldest months (with the lowest average sea temperature) are January, February, March, April, May and December (28°C).
Average daylight / Average sunshine
Kwajalein, Marshall Islands
- Average daylight in January:
11h and 4min - Average daylight in February:
11h and 5min - Average daylight in March:
12h and 1min - Average daylight in April:
12h and 2min - Average daylight in May:
12h and 3min - Average daylight in June:
12h and 4min
- Average daylight in July:
12h and 4min - Average daylight in August:
12h and 2min - Average daylight in September:
12h and 1min - Average daylight in October:
11h and 5min - Average daylight in November:
11h and 4min - Average daylight in December:
11h and 4min
The month with the longest days is June (Average daylight: 12h and 36min).
The month with the shortest days is December (Average daylight: 11h and 36min).
The month with the most sunshine is January (Average sunshine: 21h).
The month with the least sunshine is June (Average sunshine: 16h).
Average UV index
Kwajalein, Marshall Islands
The months with the highest UV index are February, March, April, May, June, July, August, September and October (UV index 12).
The month with the lowest UV index is December (UV index 10).
Kwajalein, Marshall Islands
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