January Weather in Avarua, Cook Islands

Last updated: August 21, 2025

Avarua, Cook Islands, in January offers a tropical haven with maximum temperatures reaching 28°C (84°F) and an average of 26°C (79°F), providing warm weather perfect for outdoor adventures. The balmy atmosphere is complemented by minimum temperatures around 24°C (75°F), ensuring comfortable evenings. However, this month also experiences significant precipitation, with 168 mm (6.6 in) of rain spread over 17 days, resulting in a humidity level of 84%. Visitors should embrace the lush greenery and vibrant landscapes that thrive in this tropical climate while being prepared for occasional showers.

January Temperature in Avarua

In Avarua, Cook Islands, January ushers in the warm embrace of summer, with temperatures typically ranging from a cozy 24°C (75°F) at night to a pleasant maximum of 28°C (84°F) during the day. This month shares its average temperature of 26°C (79°F) with February, as the warmth remains consistent with only a slight upward shift toward the end of the month. As summer transitions into autumn, the temperatures gradually fall, yet they still maintain a tropical allure. It’s interesting to note that from April to August, the minimum temperatures dip slightly to 21°C (70°F), making for cooler evenings, while daily highs linger in the mid-20s. December brings a return to higher nighttime temperatures as the cycle comes full circle, showcasing a mild climate that encourages both adventure and relaxation year-round. The overall trend highlights a delightful tropical warmth that characterizes the island's climate, perfect for sun-seekers and those seeking a blissful escape.

January Weather in Avarua: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Avarua, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Avarua, January typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec797980797775747373747577
Data source: Temperature data for Avarua generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in Avarua

January in Avarua, Cook Islands, is marked by significant precipitation, receiving 168 mm (6.6 in) of rain over approximately 17 days. This sets the tone for the wet season, as rainfall gradually increases in February, peaking at 298 mm (11.7 in)—the wettest month of the year. Following this peak, March still sees substantial precipitation at 209 mm (8.2 in) but begins the trend of fluctuating rainfall, with April and May both receiving around 160 mm (6.4 to 6.5 in). The drier months follow, particularly from June to September, where rainfall drops significantly, with June only accumulating 74 mm (2.9 in). As the year progresses into late fall, precipitation begins to rise again in October and November, culminating in a rainy December, which receives 220 mm (8.7 in). This cyclical pattern of wet and dry periods highlights the dynamic climate of Avarua, enchanting those who embrace its tropical rhythms.

January Precipitation Trends in Avarua

The chart displays monthly precipitation patterns in Avarua, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Avarua, January typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec168298209162165749113264122120220
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

January Humidity in Avarua

In Avarua, Cook Islands, January marks the start of the year with a notably high humidity level of 84%, a figure that remains consistent throughout the month. This slight elevation sets the tone for February, where humidity peaks at 85%, the highest point of the year. As the months progress, humidity levels gradually decline, with April and June witnessing the lowest averages at 79% and 77%, respectively. However, a gentle increase resumes in the latter part of the year, culminating in December's return to 84%. Overall, the data reveals a pattern where humidity fluctuates moderately but consistently hovers around the 80% mark, offering an insight into the tropical climate that characterizes the beauty of the Cook Islands.

January Average Humidity in Avarua

This chart illustrates the average monthly humidity levels in Avarua, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Avarua is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%85%81%79%80%77%77%80%82%83%84%84%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Avarua

In Avarua, Cook Islands, January brings an impressive UV Index of 16, categorizing it as extreme and marking a critical time for sun safety with a burn time of just 10 minutes. This pattern continues through February and March, with similarly high UV levels, reinforcing the need for protection against intense solar exposure during the peak of summer. As the months progress into April, the UV Index slightly decreases to 11, yet it still falls under the extreme category, keeping alertness necessary. Notably, a shift is observed in May, where a reduction in UV intensity brings the index down to 8, but it remains very high for sun exposure. As the year transitions into the cooler months, June and July maintain a high index at 7, allowing for longer exposure times of 25 minutes without burning. The trend revives in August, September, and again in October and November, where the UV levels rise back to extreme values, necessitating diligent sun protection measures. For those planning a trip or spending time outdoors, it’s vital to stay informed and safeguarded against the sun’s rays. Discover more at Avarua UV Index.

Maximum UV Index Levels in Avarua for January

The chart shows the monthly maximum UV Index (UVI) for Avarua in January, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In January, the maximum UV index in Avarua typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec161514118771011141415
Data source: Avarua January UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

January Sunshine in Avarua

January shines brightly in Avarua, Cook Islands, with 248 hours of sunshine, setting a warm tone for the year. As the months roll on, February offers just a touch more sunshine at 249 hours, hinting at the island's consistent brightness. By March, the days stretch beautifully, allowing for the most sunshine of the year at 288 hours—a perfect opportunity for sun-seekers and adventurers. After this peak, the trend stabilizes slightly, showcasing a healthy range of 254 to 275 hours from April to October, ensuring delightful weather for outdoor activities. As the year wraps up, Avarua continues to bask in the sun with 280 to 284 hours from November to December, making it a splendid destination year-round. This gradual ebb and flow of sunlight not only enhances the beauty of the landscape but also enriches the vibrant life within the island.

Monthly Sunshine Duration in Avarua: January Highlighted

The January sunshine duration represents the total number of hours Avarua experiences direct sunlight during the month of January, excluding cloudy or obstructed periods. This chart compares the sunshine duration of January with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec248h249h288h254h235h237h245h258h268h275h280h284h
Data source: Avarua January Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Avarua During January

In January, Avarua experiences a 33% chance of sunny weather, making it one of the cooler months in terms of sunshine compared to other periods of the year. Interestingly, the likelihood of sun increases in the following months, peaking in September with a robust 53%, followed closely by July at 48%. This trend suggests that as summer transitions into fall, visitors can expect more reliable sunny days. Conversely, the sun's presence dips sharply in December to 26%, closing the year on a less radiant note. Whether you’re seeking vibrant beach days or a cozy retreat, understanding these patterns can help you plan an ideal getaway to the Cook Islands.

Percentage of Sunny Days in January in Avarua

The chart illustrates the percentage of sunny days in Avarua throughout the year, with January highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Avarua experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec33%27%33%43%31%42%48%41%53%45%40%26%
Data source: Avarua January chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Avarua in January

In Avarua, Cook Islands, January shines as the month with the most daylight, offering a generous 13 hours for sun-seekers and adventurers alike. This sunlit abundance gradually tapers off into February and March, with both months providing 12 hours of daylight. As the year unfolds, daylight continues to decrease slightly, reaching a low of 10 hours in June and July. However, as the days grow longer again, both August and September return to 11 hours. By the time we hit October, daylight begins its ascent, climbing back to 12 hours. The year wraps up with November and December, where daylight once again reaches 13 hours, inviting lively celebrations and relaxation under the sun. This rhythmic ebb and flow of daylight not only paints a portrait of seasonal change but also creates a captivating environment for visitors and natives alike throughout the year.

Average Daylight Hours in Avarua for January

The chart illustrates the variation in daylight duration in Avarua throughout the year, with January highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec13h 14m12h 45m12h 10m11h 33m11h 4m10h 50m10h 58m11h 24m11h 58m12h 35m13h 7m13h 23m
Data source: Avarua daylight hours, calculated by summing the hours between sunrise and sunset for each day.

January Winds in Avarua

January in Avarua, Cook Islands, welcomes a delightful average wind speed of 5.8 m/s (13 mph), making it one of the gentler months for breezy island days. As the year progresses into February, the winds ease slightly to 4.9 m/s (11 mph), hinting at a more tranquil atmosphere. However, come May, the winds pick up significantly, reaching 7.4 m/s (16 mph), setting the stage for a breezier early winter. This trend continues through June, where the winds stabilize at 7.1 m/s (16 mph), before gradually moderating during the latter half of the year. By November and December, wind speeds return to a calmer 6.3 m/s (14 mph), reflecting the rhythmic ebb and flow of Avarua's climatic patterns. Overall, January sets the tone for a year where gentle winds precede and follow invigorating gusts, ensuring a dynamic yet pleasant environment year-round.

Average January Wind Speed in Avarua

The chart displays monthly wind speed patterns in Avarua, with values for each month shown alongside January's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how January's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec5.8 m/s4.95.35.47.47.16.06.76.66.86.36.3
Data source: Avarua January wind data, generated using information from the Copernicus Climate Change Service.

How January Weather in Avarua Compares to Other Months

Weather in Avarua varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Avarua, focusing on differences in temperature, rainfall, humidity, and UV levels.

In comparison to January, February experiences slightly warmer temperatures, with maximums reaching up to 29°C (84°F) compared to January's peak of 28°C (84°F). Both months share the same minimum and average temperatures of 24°C (75°F) and 26°C (79°F), respectively. However, February is significantly wetter, receiving 298 mm (11.7 in) of precipitation over 22 days, while January sees 168 mm (6.6 in) over 17 days. Humidity levels are also comparable, with February hovering at 85% compared to January's 84%. For a more detailed look at February weather, visit Avarua weather in February.

In comparing the weather of January and March, both months exhibit warm temperatures, with January having a minimum of 24°C (75°F), an average of 26°C (79°F), and a maximum of 28°C (84°F). March sees a slight increase, featuring a minimum of 24°C (75°F), an average of 27°C (80°F), and a maximum of 29°C (84°F). Precipitation levels are higher in March, totaling 209 mm (8.2 in) over 24 days, compared to January’s 168 mm (6.6 in) over 17 days. Additionally, January has a higher humidity level at 84%, while March’s humidity is slightly lower at 81%. For a more detailed look at what to expect, you can refer to Avarua weather in March.

In comparing January and April weather, both months exhibit similar average temperatures, with January showing a minimum of 24°C (75°F) and April slightly lower at 23°C (74°F). The maximum temperatures are almost identical, with January peaking at 28°C (84°F) and April at 28°C (83°F). While January experiences slightly higher precipitation at 168 mm (6.6 in) compared to April's 162 mm (6.4 in), both months have rain on approximately 17 days, contributing to a relatively high humidity of 84% in January versus 79% in April. For a more detailed look at April weather, you can visit Avarua weather in April.

In January, temperatures in Avarua typically range from a minimum of 24°C (75°F) to a maximum of 28°C (84°F), with an average temperature of 26°C (79°F). The month experiences significant rainfall, with 168 mm (6.6 in) of precipitation over 17 days and high humidity levels around 84%. In comparison, May sees slightly cooler temperatures, with a minimum of 22°C (71°F) and a maximum of 28°C (82°F), resulting in an average of 25°C (78°F). The precipitation is slightly lower at 165 mm (6.5 in) over 16 days, and humidity is reduced to 80%. For more detailed information on weather conditions during May, please visit Avarua weather in May.

In January, the weather features warmer temperatures, with a minimum of 24°C (75°F) and an average high of 28°C (84°F), accompanied by significant rainfall totaling 168 mm (6.6 in) over 17 days and high humidity at 84%. In contrast, June experiences cooler temperatures, with a minimum of 21°C (70°F) and an average maximum of 26°C (79°F). Rainfall in June is markedly less, at 74 mm (2.9 in) over 12 days, and humidity also drops to 77%. For more detailed information, you can check out Avarua weather in June.

January and July present contrasting weather patterns in terms of temperature and precipitation. January experiences higher temperatures, with an average of 26°C (79°F), peaking at 28°C (84°F), while July is cooler, averaging 23°C (74°F) with a maximum of 26°C (79°F). Additionally, January sees more rainfall, with 168 mm (6.6 in) over 17 days, compared to July’s 91 mm (3.6 in) across 13 days. Humidity levels are also higher in January at 84%, in contrast to July’s 77%. For a more detailed look at July weather, you can visit this link: Avarua weather in July.

In January, the weather is typically warmer and more humid than in August, with temperatures ranging from a minimum of 24°C (75°F) to a maximum of 28°C (84°F) and an average of 26°C (79°F). This month sees significant rainfall, totaling 168 mm (6.6 in) over 17 days, along with a humidity level of 84%. In contrast, August experiences cooler temperatures, with a minimum of 19°C (66°F), an average of 23°C (73°F), and a maximum of 26°C (79°F). Precipitation is lower in August at 132 mm (5.2 in) over 12 days, accompanied by a slightly lower humidity of 80%. For a closer look at August weather details, check out Avarua weather in August.

January's weather is characterized by warmer temperatures, with minimums around 24°C (75°F) and an average of 26°C (79°F), peaking at 28°C (84°F). In contrast, September is cooler, featuring minimum temperatures of 19°C (66°F) and an average of 23°C (74°F), with a maximum of 25°C (78°F). Additionally, January experiences significantly higher precipitation levels of 168 mm (6.6 in) over 17 days, compared to September's 64 mm (2.5 in) over just 10 days. Humidity remains relatively high in both months, at 84% in January and slightly lower at 82% in September. For more detailed information, you can check Avarua weather in September.

In January, the weather is significantly warmer, with average temperatures ranging from a minimum of 24°C (75°F) to a maximum of 28°C (84°F) and higher humidity at 84%. Precipitation is also more prominent, averaging 168 mm (6.6 in) over 17 days. In contrast, October experiences cooler temperatures, with a minimum of 19°C (67°F) and a maximum of 25°C (78°F), accompanied by slightly lower precipitation of 122 mm (4.8 in) spread across just 12 days. Nevertheless, humidity remains relatively consistent at 83%. For a detailed look at conditions, check out Avarua weather in October.

January and November both exhibit warm, tropical weather, but with some notable differences. In January, temperatures are slightly higher, with a minimum of 24°C (75°F) and an average of 26°C (79°F), peaking at 28°C (84°F). This month also experiences more rainfall, averaging 168 mm (6.6 in) over 17 days, contributing to a consistently high humidity of 84%. In contrast, November sees slightly cooler temperatures, with a minimum of 21°C (71°F) and an average of 24°C (76°F), peaking at 27°C (80°F). Precipitation is lower in November, at 120 mm (4.7 in) over 15 days, while humidity remains the same at 84%. For more details, visit Avarua weather in November.

In January, the weather shows a slight increase in temperatures compared to December, with average daily temperatures ranging from a minimum of 24°C (75°F) to a maximum of 28°C (84°F). In contrast, December has average temperatures of 23°C (74°F) to 28°C (82°F). Precipitation levels are lower in January, with 168 mm (6.6 in) of rain over 17 days, whereas December experiences heavier rainfall of 220 mm (8.7 in) spread across 19 days. Both months maintain a consistent humidity level of 84%. For more detailed weather information, you can visit Avarua weather in December.

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Conclusion: What to Expect From January Weather in Avarua

In January, Avarua experiences warm temperatures with a pleasant average, making it a compelling choice for visitors. However, this month also sees a significant increase in precipitation, with rain occurring on nearly half the days. The humidity level remains high, contributing to a tropical atmosphere that can be both refreshing and challenging. Compared to other months, January’s blend of warmth and rainfall sets it apart, offering a unique experience for those seeking to explore the beauty of the Cook Islands. To learn more about how January weather differs from the rest of the year, visit Avarua Climate.