Climate and monthly weather forecast
Adamstown, Pitcairn

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The British territory of Adamstown in the Pitcairn Island viewed from the Pacific waters
The British territory of Adamstown in the Pitcairn Island viewed from the Pacific waters

The climate of Adamstown

Adamstown, the only settlement of the Pitcairn Islands, nestles within the Köppen climate classification as a tropical rainforest climate. This climatological setting is a defining trait of its geographical position, situated in the midst of the South Pacific Ocean. This island cluster is a true embodiment of a vibrant tropical environmental haven, featuring a stable temperature scale with a slight fluctuation from 19.8°C (67.6°F) as a yearly low in August to 26.2°C (79.2°F) as a yearly high from February to March.

Undeniably, the dominant signature of Adamstown's weather pattern is its high humidity level, with an annual average around 76%. This humidity level demonstrates the presence of a significant amount of water vapour in the atmosphere, which further influences the island's climatology. Notably, the rainfall distribution showcases the tropical characteristic of Adamstown, recording over 60mm (2.36") each month. The maximum monthly festival of showers graces the land in January and December, with an average of 112mm (4.41") and 108mm (4.25") respectively.

Wind behaves fairly consistently year-round, with recorded speeds from 20.3km/h (12.6mph) in February to 26.2km/h (16.3mph) in July. The sunniest periods are crowned in November and December, with the daylight stretching out to create a stunning canvas of dramatic sunsets, painting the sky with pastel shades while counting 13.3h to 13.7h respectively.

The best time to visit Adamstown

Characterizing the best time to visit Adamstown varies greatly depending on tourist individual preferences. However, the period from June to August delivers lesser rainfall with an average between 57mm (2.24") to 65mm (2.56"). During these months, there is an increase in sunshine hours with up to 7.1h to 7.4h daily, ideal for numerous outdoor activities. Additionally, the sea temperatures dip slightly to 22.3°C (72.1°F) from June to September, drawing in those who enjoy a cooler bathing experience.

The worst time to visit Adamstown

From a perspective of high rainfall and potential storms, January and December are the less ideal months to visit Adamstown. Rainfall increases up to 112mm (4.41") in December and 108mm (4.25") in January, likely to limit outdoor explorations. Additionally, the relative humidity reaches 78%, which might result in rather sultry conditions.

Spring weather in Adamstown

Spring in Adamstown does not follow the same script as temperate climates. The period from September to November presents a uniform temperature pattern from 21.3°C (70.3°F) to 24.2°C (75.6°F). Rainfall patterns echo the same theme, indicating a slight incline from 62mm (2.44") in September to 76mm (2.99") in November. Furthermore, the wind speed also remains fairly consistent, from 24.7km/h (15.3mph) to 22.7km/h (14.1mph).

Summer weather in Adamstown

Summer runs from December through February in Adamstown. During this period, the weather exhibits its tropical character with high rainfall from 104mm (4.09") in February to 112mm (4.41") in December. Sea temperatures hit their peak in these months with an average from 26.1°C (79°F) to 27.3°C (81.1°F), offering a flavor of tropical richness to beach lovers.

Autumn weather in Adamstown

With a temperature range from 21.6°C (70.9°F) in June to 23.8°C (74.8°F) in April, Autumn in Adamstown is quite mild. The rainfall during this period varies from 73mm (2.87") in May to 98mm (3.86") in April. These months also offer longer sunshine hours, between 6h to 7.5h per day, ideal for those who wish to grab their share of radiant warmth from the sun.

Winter weather in Adamstown

Winter in Adamstown, through July to September, can veer on being relatively cooler, with temperatures from 19.8°C (67.6°F) in August to 21.6°C (70.9°F) in July. Despite the lower temperatures, the persistent tropical atmosphere ensures a warm winter, devoid of bone-chilling cold. Rainfall drops to fairly lower levels, from 57mm (2.24") in July to 65mm (2.56") in August. Winter days allow appreciable sunshine with durations from 7.1h to 7.4h, adding brightness to the Adamstown winter sky.

Weather in January

During January in Adamstown, consistent rainfall characterizes the weather pattern, resulting in an environment ripe with lush greenery and incredible ocean views. The city's inhabitants observe fluctuations in temperature, humidity, and wind speed, with the month recording a significant high of 25.4°C (77.7°F) and rainfall reaching 108mm (4.25"). Weather in January »

Weather in February

The weather transition between January and February in Adamstown is a seamless blend, with February maintaining the climate's relative consistency. However, subtle changes such as a slight increase in daytime temperature to 26.2°C (79.2°F) and a gentle easing in rainfall to 104mm (4.09") are observed. Weather in February »

Weather in March

Adamstown's weather remains constant from February to March. The main difference lies in the pattern of rainfall, which has a slight increase in frequency from 18.3 to 21.3 days. These weather conditions further enhance the lushness of the local vegetation, painting a vibrant, green landscape across the city. Weather in March »

Weather in April

In April, things start to change a bit in Adamstown, although temperature variations remain insignificant. The onset of a slightly cooler climate is witnessed, with a decrease in the average high temperatures from 26.2°C (79.2°F) to 24.9°C (76.8°F). Weather in April »

Weather in May

May identifies a continuation of Adamstown's cooler weather pattern started in April. The first true whispers of autumn become evident, distinguished by the slight fading of the vibrant colours that adorned the cityscape during the high summer months. Weather in May »

Weather in June

June brings with it the start of winter in Adamstown. Although the city does not experience the aggressive snowfall associated with colder regions, the temperature drop is felt, decreasing to an average low of 21.3°C (70.3°F). However, the city remains radiant, boasting scenic walks under the intermittently cloudy sky. Weather in June »

Weather in July

Visitors to Adamstown in July will experience the peak of winter. This period registers the lowest average temperatures throughout the year, with the mercury barely topping 21.6°C (70.9°F). With the local flora shifting from verdant to a more subdued palette, the city takes on a different aesthetic charm. Weather in July »

Weather in August

By August, Adamstown begins the transition towards more pleasant weather conditions. The city's weather remains settled, with temperatures averaging from 19.8°C (67.6°F) to 21.4°C (70.5°F). Even as the residual chill from July's peak winter lingers, the skies often display a play of light and shadow, courtesy of the increased cloud cover. Weather in August »

Weather in September

With the arrival of September, Adamstown starts to shake off its winter persona. The weather during this time gradually warms up, with the temperature range stabilizing between 19.9°C (67.8°F) to 21.3°C (70.3°F). The city, too, transitions, preparing to welcome a new season of blooming flowers and sunny days. Weather in September »

Weather in October

Adamstown welcomes October with the onset of summer and a significant change in weather. Rainfall levels increase dramatically from 62mm (2.44") in September to 110mm (4.33") in October. The city witnesses a bloom like no other as flowers start to come alive after the winter slumber. Weather in October »

Weather in November

November in Adamstown sees fully established summer conditions. The city basks under the warm sun, with summer fervour resonating throughout the community. Maintaining its tropical heritage, Adamstown records temperatures ranging between 21.8°C (71.2°F) and 22.9°C (73.2°F). Weather in November »

Weather in December

The final month of the year sees Adamstown fully embracing its summer trappings. The city is in full festive mode, with people enjoying the warm weather that hovers around 24.2°C (75.6°F). This period of the year witnesses a net increase in local and foreign visitors, all in order to experience the city's well-known summer thrills. Weather in December »

Frequently asked questions

What is the most humid month in Adamstown?

The months with the highest humidity are January, October through December, with an average relative humidity of 78%.

How many days does it rain in Adamstown?

Throughout the year, in Adamstown, Pitcairn, there are 219.1 rainfall days, and 1048mm (41.26") of precipitation is accumulated.

What are the months with the highest UV index in Adamstown?

The months with the highest UV index are January and February, with an average maximum UV index of 7.

What time of the year is the hottest in Adamstown?

The yearly peak temperatures occur in February and March, averaging a high-temperature of 26.2°C (79.2°F).

When is the sea warmest in Adamstown?

March is the month with the warmest seawater in Adamstown, Pitcairn, with an average sea temperature of 27.3°C (81.1°F).

What is the month with the shortest days in Adamstown?

The month with the shortest days in Adamstown, Pitcairn, is June, with an average of 10h and 36min of daylight.

What is the month with the least sunshine in Adamstown?

June has the least sunshine of the year in Adamstown, with an average of 6h of sunshine.

When is the lowest UV index in Adamstown?

The months with the lowest UV index in Adamstown are June, August and September, with an average maximum UV index of 5.

What is the least humid month in Adamstown?

With an average relative humidity of 75%, July is the least humid month in Adamstown.

What is the driest month in Adamstown?

July is the month with the least rainfall. Rain falls for 15.6 days and accumulates 57mm (2.24") of precipitation.

What are the months with the coldest sea water in Adamstown?

The months with the coldest seawater in Adamstown are August and September, with an average sea temperature of 22.3°C (72.1°F).

What month is the coldest in Adamstown?

Adamstown's September weather reaches an average high of 21.3°C (70.3°F) and an average low of 19.9°C (67.8°F), making it the coldest month.

What is the rainiest month in Adamstown?

December is the month with the most rainfall. Rain falls for 18.4 days and accumulates 112mm (4.41") of precipitation.

When are the longest days in Adamstown?

The month with the longest days in Adamstown, Pitcairn, is December, with an average of 13h and 42min of daylight.

Is there Daylight Saving Time (DST) in Adamstown?

Adamstown, Pitcairn, does not observe Daylight Saving Time (DST). -08 timezone is used over the entire year.

What month has the most sunshine in Adamstown?

December has the most sunshine of the year in Adamstown, Pitcairn, with an average of 9.2h of sunshine.

Average temperature
Adamstown, Pitcairn

Average temperature - Adamstown, Pitcairn

The warmest months (with the highest average high temperature) are February and March (26.2°C).
The month with the lowest average high temperature is September (21.3°C).

The months with the highest average low temperature are February and March (25.3°C).
The coldest month (with the lowest average low temperature) is August (19.8°C).

Average pressure
Adamstown, Pitcairn

Average pressure - Adamstown, Pitcairn

The month with the highest atmospheric pressure is September (1019.7mbar).
The month with the lowest atmospheric pressure is January (1016.3mbar).

Average wind speed
Adamstown, Pitcairn

Average wind speed - Adamstown, Pitcairn

The windiest month (with the highest average wind speed) is July (26.2km/h).
The calmest month (with the lowest average wind speed) is February (20.3km/h).

Average humidity
Adamstown, Pitcairn

Average humidity - Adamstown, Pitcairn

The months with the highest relative humidity are January, October, November and December (78%).
The month with the lowest relative humidity is July (75%).

Average rainfall
Adamstown, Pitcairn

Average rainfall - Adamstown, Pitcairn

The wettest month (with the highest rainfall) is December (112mm).
The driest month (with the least rainfall) is July (57mm).

Average rainfall days
Adamstown, Pitcairn

Average rainfall days - Adamstown, Pitcairn

The month with the highest number of rainy days is January (22 days).
The month with the least rainy days is September (14.8 days).

Average sea temperature
Adamstown, Pitcairn

Average sea temperature - Adamstown, Pitcairn

The best month for swimming (with the highest average sea temperature) is March (27.3°C).
The coldest months (with the lowest average sea temperature) are August and September (22.3°C).

Average daylight / Average sunshine
Adamstown, Pitcairn

Average daylight / Average sunshine - Adamstown, Pitcairn

The month with the longest days is December (Average daylight: 13h and 42min).
The month with the shortest days is June (Average daylight: 10h and 36min).

The month with the most sunshine is December (Average sunshine: 9h and 12min).
The month with the least sunshine is June (Average sunshine: 6h and 0min).

Average sunshine days
Adamstown, Pitcairn

Average sunshine days - Adamstown, Pitcairn

The month with the most sunshine days is July (10.6 days).
The month with the least sunshine days is January (4.9 days).

Average UV index
Adamstown, Pitcairn

Average UV index - Adamstown, Pitcairn

The months with the highest UV index are January and February (UV index 7).
The months with the lowest UV index are June, August and September (UV index 5).

Average visibility
Adamstown, Pitcairn

Average visibility - Adamstown, Pitcairn

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).

Adamstown, Pitcairn

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