Climate and monthly weather forecastIsland Harbour, Anguilla
Climate and monthly weather forecast
The climate of Island Harbour
On the island of Anguilla, with its boundless shine and coastal town, Island Harbour, characterised by its tropical wet and dry climate. Its geographic position facilitates this aspect of climate in the Köppen climate classification labeled as Aw. Experiencing a significant variation in the weather throughout the year, residents and travellers bear witness to the transformation of the skies.Analyzing the climatic trends, the temperature shifts from 25°C (77°F) in January to a peak of 28.8°C (83.8°F) in September, accompanied by changes in humidity, tracing a pattern from 75% in January to a high 78% from May to August. During this period, the location experiences an increase in rainfall from 31mm (1.22") in February to a drastic jump to 89mm (3.5") in October, indicating the onset of the monsoons.
Dedicated observers of the weather patterns may identify the unique weather phenomena occurring in Island Harbour. Rainfall appears to be at a maximum during the months of September and October, reaching up to 88mm (3.46") and 89mm (3.5") respectively. In contrast, the extended daylight of 13.2 hours during June promotes the allure of extended beach days. The wind speed in July whips at a gusting rate of 36.3km/h (22.6mph), thus catering to the adventurous wind-surfers who crave an adrenaline rush.
The best time to visit Island Harbour
The optimum time for vacation intention in Island Harbour falls between December and April, well suited to travellers looking for a radiant sojourn. Sunshine streams in for about 10 hours, and rainfall dips as low as 31mm (1.22") in February, signifying pleasant weather conditions. It captivates beach enthusiasts, exhibiting a low wind speed that ranges from 19.2km/h (11.9mph) to 24.6km/h (15.3mph), and ensures damage-free sailing or cruising experiences, particularly in December.The worst time to visit Island Harbour
On the opposite end of the scale, discerning tourists would consider the months from August to November as less than ideal for a visit due to the high rainfall. The months of September and October see 78mm (3.07") and 89mm (3.5") of rainfall respectively, along with increased cloud cover at 37%. Despite the average temperature being a warm 28.8°C (83.8°F) and 28.5°C (83.3°F), the high humidity at 77% and 76% may hinder any outdoor adventures.Spring weather in Island Harbour
Transitioning into the spring months between March and May, Island Harbour experiences a climatic ascension. The temperature rises consistently from 25.8°C (78.4°F) to 27.1°C (80.8°F), while humidity enhances from 75% to 78%. With the extent of daylight increasing from 12.1 hours to 13 hours and rainfall fluctuating from 32mm (1.26") to 67mm (2.64"), spring melts into the veil of summer.Summer weather in Island Harbour
When summer takes charge, Island Harbour bears witness to the zenith of its climatic patterns. Temperature surges to a high of 28.8°C (83.8°F) in September from 28.1°C (82.6°F) in June, and the humidity plateau at 78%. Long daylight times of 13.2 hours in June gradually decrease to 12.2 hours by September. The rainfall rates also ascend, peaking at 78mm (3.07") in the same month, accompanying the soaring mercury levels.Autumn weather in Island Harbour
As autumn descends on Island Harbour, October to December sees a decrease in temperature from 28.5°C (83.3°F) to 26°C (78.8°F) and a gradual shortening in daylight hours from 11.7 hours to 11 hours. The rainfall in October reaches its peak of 89mm (3.5") before decreasing to 57mm (2.24") in December, while relative humidity falls from 76% to 75%. Also, there appears to be a decline in sunshine hours from 6.6 to 6.4 in the month of December.Winter weather in Island Harbour
Winter in Island Harbour lasts from January to February, marked by a marginal fall in temperature levels from 26.1°C (79°F) to 25.8°C (78.4°F). The rain showers decline to a yearly minimum of 31mm (1.22") in February, and the somewhat cool wind speeds swap between 24.9km/h (15.5mph) to 24.4km/h (15.2mph). Throughout these months, there is static at 11.2 hours and 11.6 hours of daylight, illuminating the serene skies of Island Harbour.Weather in January
January sets the stage for the year in Island Harbour, Anguilla, an island synonymous with tropical climate and natural beauty. This month experiences a relative spotlight on rainfall, with a total of 41mm (1.61"), making it the heaviest compared to its adjacent months, February and December. Weather in January »Weather in February
As one moves into February in Island Harbour, Anguilla, a noticeable shift in rainfall is observed with a reduction, signifying the receding nature of the previous month's heavier showers. An overall drier spell marks this period, providing ample opportunities for revelling in the sun. Weather in February »Weather in March
March witnesses a slight yet critical shift in the weather scenario of Island Harbour, Anguilla. This month sees the least wind speed, about 22.9km/h (14.2mph), a significant decline compared to the gustier January and the approaching gusty May. Weather in March »Weather in April
April in Island Harbour, Anguilla, marks the transition towards the approaching wetter seasons. The shift is not abrupt but rather a gradual progression that does not forsake the tropical warmth the island is esteemed for. Though rainfall starts gathering pace, the multitude of clear skies and the abundance of sunshine do not turn bleak. Weather in April »Weather in May
May stands out as a noteworthy month in Island Harbour, Anguilla, primarily due to the onset of the consistently higher temperatures anticipated in the approaching months. An emblematic month regarding rainfall, May sees a spike to 67mm (2.64"), indicating the rainiest period compared to the prior drier April and the subsequent less wet June. Weather in May »Weather in June
June embodies the quintessential tropical integration of heat, humidity and rainfall in Island Harbour, Anguilla. This fusion births a unique weather phenomenon characterised by periodic showers spaced with solar bliss. The overall ambient environment retains a warm charm that attracts vacationers seeking to refuse the dry, harsh summer conditions found elsewhere. Weather in June »Weather in July
July, nestled in the heart of summer, brings to Island Harbour, Anguilla, the highest temperatures of the year, ranging from 27.1°C (80.8°F) to 28.3°C (82.9°F), a slight increase from the temperatures of June and a precursor to the continued warmth of August. Weather in July »Weather in August
August is celebrated in Island Harbour, Anguilla for its earnest warmth and humidity. Despite being part of the annual hurricane season, the island remains generally safe and experiences a higher dose of sunshine, favouring a distinct range of flora and fauna. Weather in August »Weather in September
With the arrival of September, Island Harbour, Anguilla, nudges towards the concluding phase of the yearly hurricane season. This period sees the most abundant rainfall, recording 78mm (3.07"), signifying a peak when compared to the rainfall witnessed in August and the impending October. Weather in September »Weather in October
October in Island Harbour, Anguilla denotes a terrain vivid with weather hues. A slow departure from the rainy September towards a drier November is observed, transforming the island into a spectacle of nature. The nip in the air marks the onset of cooler months with warmer clothing becoming a necessity during evenings. Weather in October »Weather in November
November in Island Harbour, Anguilla, brings about a distinct change in weather. The noticeable precipitation level at 88mm (3.46") indicates that November is the second rainiest month of the year compared to the relatively dry October and the comparatively wet December. Weather in November »Weather in December
December, the conclusion of the calendar year, again welcomes a drier climate in Island Harbour, Anguilla. The shift towards the less rainy climate from a much wetter November is quite evident as the month progresses. Notwithstanding the decreasing rainfall, the month teems with activities, starting from open-air leisure pursuits to indoor engagements. Weather in December »Updated: Jan 29, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
The months with the lowest humidity in Island Harbour are January through March and December, with an average relative humidity of 75%.
Throughout the year, in Island Harbour, Anguilla, there are 247 rainfall days, and 711mm (27.99") of precipitation is accumulated.
The months with the highest UV index in Island Harbour are January through December, with an average maximum UV index of 7.
January through December, with an average maximum UV index of 7, are months with the lowest UV index.
In Island Harbour, Anguilla, the months of February and March are known for the lowest temperatures, reaching an average high of 25.8°C (78.4°F).
February is the month with the least rainfall in Island Harbour, Anguilla. Rain falls for 18.3 days and accumulates 31mm (1.22") of precipitation.
The months with the highest humidity are May through August, with an average relative humidity of 78%.
With an average of 13h and 12min of daylight, June has the longest days of the year in Island Harbour.
With an average of 10.5h of sunshine, August has the most sunshine of the year.
September registers as the month with the average highest temperatures, reaching 28.8°C (83.8°F) at its peak and 27.7°C (81.9°F) at the lowest.
The month with the most rainfall in Island Harbour is October, when the rain falls for 20.8 days and typically aggregates up to 89mm (3.5") of precipitation.
The month with the shortest days in Island Harbour is December, with an average of 11h and 6min of daylight.
Island Harbour does not observe Daylight Saving Time (DST). AST timezone is used throughout the entire year.
The month with the least sunshine in Island Harbour is December, with an average of 6.4h of sunshine.
Average temperature
Island Harbour, Anguilla
The warmest month (with the highest average high temperature) is September (28.8°C).
The months with the lowest average high temperature are February and March (25.8°C).
The month with the highest average low temperature is October (27.8°C).
The coldest month (with the lowest average low temperature) is March (24.7°C).
Average pressure
Island Harbour, Anguilla
- Average pressure in January:
1016.6mbar - Average pressure in February:
1016.6mbar - Average pressure in March:
1016.1mbar - Average pressure in April:
1015.7mbar - Average pressure in May:
1015.8mbar - Average pressure in June:
1016.6mbar
- Average pressure in July:
1016.5mbar - Average pressure in August:
1015mbar - Average pressure in September:
1013.5mbar - Average pressure in October:
1012.8mbar - Average pressure in November:
1012.9mbar - Average pressure in December:
1015.3mbar
The months with the highest atmospheric pressure are January, February and June (1016.6mbar).
The month with the lowest atmospheric pressure is October (1012.8mbar).
Average wind speed
Island Harbour, Anguilla
- Average wind speed in January:
24.9km/h - Average wind speed in February:
24.4km/h - Average wind speed in March:
22.9km/h - Average wind speed in April:
22.7km/h - Average wind speed in May:
22.8km/h - Average wind speed in June:
23.7km/h
- Average wind speed in July:
25.7km/h - Average wind speed in August:
24.3km/h - Average wind speed in September:
20.4km/h - Average wind speed in October:
19.2km/h - Average wind speed in November:
20.8km/h - Average wind speed in December:
24.6km/h
The windiest month (with the highest average wind speed) is July (25.7km/h).
The calmest month (with the lowest average wind speed) is October (19.2km/h).
Average humidity
Island Harbour, Anguilla
The months with the highest relative humidity are May, June, July and August (78%).
The months with the lowest relative humidity are January, February, March and December (75%).
Average rainfall
Island Harbour, Anguilla
The wettest month (with the highest rainfall) is October (89mm).
The driest month (with the least rainfall) is February (31mm).
Average rainfall days
Island Harbour, Anguilla
- Average rainfall days in January:
22.5 days - Average rainfall days in February:
18.3 days - Average rainfall days in March:
19.4 days - Average rainfall days in April:
18.9 days - Average rainfall days in May:
21.3 days - Average rainfall days in June:
16.9 days
- Average rainfall days in July:
21.8 days - Average rainfall days in August:
21.6 days - Average rainfall days in September:
19.3 days - Average rainfall days in October:
20.8 days - Average rainfall days in November:
23.5 days - Average rainfall days in December:
22.7 days
The month with the highest number of rainy days is November (23.5 days).
The month with the least rainy days is June (16.9 days).
Average daylight / Average sunshine
Island Harbour, Anguilla
- Average daylight in January:
11h and 12min - Average daylight in February:
11h and 36min - Average daylight in March:
12h and 6min - Average daylight in April:
12h and 36min - Average daylight in May:
13h and 0min - Average daylight in June:
13h and 12min
- Average daylight in July:
13h and 6min - Average daylight in August:
12h and 42min - Average daylight in September:
12h and 12min - Average daylight in October:
11h and 42min - Average daylight in November:
11h and 18min - Average daylight in December:
11h and 6min
The month with the longest days is June (Average daylight: 13h and 12min).
The month with the shortest days is December (Average daylight: 11h and 6min).
- Average sunshine in January:
7h and 18min - Average sunshine in February:
8h and 42min - Average sunshine in March:
8h and 42min - Average sunshine in April:
10h and 0min - Average sunshine in May:
10h and 12min - Average sunshine in June:
10h and 18min
- Average sunshine in July:
10h and 12min - Average sunshine in August:
10h and 30min - Average sunshine in September:
9h and 30min - Average sunshine in October:
6h and 36min - Average sunshine in November:
6h and 30min - Average sunshine in December:
6h and 24min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 6h and 24min).
Average sunshine days
Island Harbour, Anguilla
- Average sunshine days in January:
4.3 days - Average sunshine days in February:
4.6 days - Average sunshine days in March:
6.4 days - Average sunshine days in April:
8.3 days - Average sunshine days in May:
6.2 days - Average sunshine days in June:
6.3 days
- Average sunshine days in July:
3.9 days - Average sunshine days in August:
4.3 days - Average sunshine days in September:
7.5 days - Average sunshine days in October:
8.3 days - Average sunshine days in November:
4.5 days - Average sunshine days in December:
4.3 days
The months with the most sunshine days are April and October (8.3 days).
The month with the least sunshine days is July (3.9 days).
Average UV index
Island Harbour, Anguilla
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
Average cloud cover
Island Harbour, Anguilla
The months with the most cloud cover are May, June, July and August (Cloud cover 41).
The months with the least cloud cover are February and March (Cloud cover 35).
Average visibility
Island Harbour, Anguilla
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
