Climate and monthly weather forecastNikumanu, Kiribati
Climate and monthly weather forecast
The climate of Nikumanu
Nikumanu, Kiribati is situated on the equator and is characterized by an Af (Tropical Rainforest)-predominate climate on the Köppen climate classification scheme. The climatic conditions exhibit a marked consistency throughout the year, with stable temperatures and a high proportion of humidity. Rainfall occurs frequently, but the distribution sees significant disparities over the course of twelve months.Average monthly high temperatures hover consistently between 28.2°C (82.8°F) and 28.9°C (84°F) and the low temperatures remain equally stable, with a small fluctuation between 27.1°C (80.8°F) and 27.8°C (82°F). Relative humidity keeps within a narrow range from 74% to 78%. This high moisture content, combined with the consistently high temperatures, indicates a sultry, tropical environs throughout the year.
The Island receives rainfall monthly, varying between 30mm (1.18") in November and 128mm (5.04") in March, with more raining days occurring in March with 19.1 days and fewer in November with 10.2 days. This indicates a rather rainy climate softened by the high temperature. Average daylight duration remains in a close range from 12 hours to 12.2 hours, with the sunshine duration varying markedly from 7.5 hours to 10.4 hours per day. The lowest sunshine duration coincides with the months experiencing maximum rainfall, demonstrating an inverse relationship between the two variables.
Wind speeds exhibit a fluctuation from 16.7km/h (10.4mph) to 21.7km/h (13.5mph) which adds to the dynamicity of the climate but does not significantly affect the overall climate conditions as they remain within a similar range. Pressure levels suggest a stable atmospheric condition, oscillating negligibly between 1007.5mb to 1009.5mb.
The best time to visit Nikumanu
Taking into account the favorable weather conditions, it is advisable to schedule a visit to Nikumanu from October to November. During these months, the Island witnesses the longest sunshine duration, reaching up to 10.4 hours per day, coupled with the smallest rainfall amounts around 30mm (1.18") to 41mm (1.61"), resulting in only 10.2 to 14.5 days of rain per month. This dynamic results in a considerable amount of clear, sunny days which makes it perfect for outdoor activities.The worst time to visit Nikumanu
In contrast, the months of March and April might not be the ideal time for tourists. These months mark peak rainfall amounts, from 103mm (4.06") to 128mm (5.04"), and higher number of raining days from 17.8 to 19.1 days. The sunshine duration, meanwhile, drops to 7.6 hours per day, significantly lowered from its peak during the late months of the year.Spring weather in Nikumanu
In Nikumanu, the months of March, April, and May are quite humid, and rainfall is frequent with amounts from 103mm (4.06") to 128mm (5.04") and 19.1 raining days in both March and May. The temperatures are relatively high, from 27.1°C (80.8°F) to 27.8°C (82°F) in the night, and 28.4°C (83.1°F) to 28.5°C (83.3°F) during the day. The Sunshine duration decreases from 8.1 hours in May to 7.6 in March, while the wind speed is milder, between 17.4km/h (10.8mph) and 19.5km/h (12.1mph).Summer weather in Nikumanu
The summer season in Nikumanu, comprising June, July, and August, is characterized by a warm and humid environment. The average monthly temperatures fluctuate marginally between 27.3°C (81.1°F) and 27.7°C (81.9°F) at night and 28.6°C (83.5°F) to 28.8°C (83.8°F) during the day. The rainfall generally lessens starting from June and reaches 62mm (2.44") by August. These months also show a relatively higher sunshine duration of more than 8 hours a day.Autumn weather in Nikumanu
During the autumn period of September, October, and November, the weather remains stable. Nighttime temperatures range from 27.5°C (81.5°F) to 27.5°C (81.5°F) and daily high temperatures vary between 28.5°C (83.3°F) and 28.5°C (83.3°F). Rainfall decreases significantly to around 39mm (1.54") in September and 30mm (1.18") in November, indicating clearer skies. Sunshine duration expands to reach its peak hours, with November witnessing 10.4 hours of sunshine.Winter weather in Nikumanu
The winter weather in Nikumanu, spanning December, January, and February, consists of high temperatures with small variations at 27.5°C (81.5°F) at night and from 28.3°C (82.9°F) to 28.5°C (83.3°F) during the day. The Island receives substantial rainfall during this period, with rainfall increasing from 106mm (4.17") to 102mm (4.02"). The month of December experiences 14.5 raining days, while the sunshine duration drops to its lowest point at 7.5 to 7.7 hours per day.Weather in January
The New Year in Nikumanu, Kiribati, ushers in a warm atmosphere with peak humidity that may result in light rain. January is known for having the highest recorded rainfall of 99mm (3.9"), catering to the island's lush, green ecology. Weather in January »Weather in February
As the calendar flips to February, Nikumanu experiences a slight drop in rainfall and a reduction in overcast skies compared to January. The island welcomes a noticeable increase in daylight, assuring a perfect setting for outdoor activities. Weather in February »Weather in March
March in Nikumanu ushers in not only a fresh season but an increase in rainfall compared to February. Due to the increased amount of precipitation, humidity levels rise noticeably. With rainfall reaching as high as 128mm (5.04") this month, it shapes March as the wettest period of the year. Weather in March »Weather in April
April sees a departure from the wet trend of March as the rainfall drops from 128mm (5.04") to 103mm (4.06"). The weather in Nikumanu moves to a more balanced state, with a consistent barometric pressure of 1008.9mb. Despite the decline in rainfall, the number of raining days marginally increases, reflecting the unpredictable weather conditions of April. Weather in April »Weather in May
May marks the transition to drier conditions in Nikumanu, with lesser rainfall compared to the previous months. The month stands out for having a significant increase in sunshine hours, recording the highest at 8.1 hours. This decreased precipitation ensures that humidity falls, providing a more comfortable climate. Weather in May »Weather in June
Weather conditions in June do not differ widely from May. The rainfall decreases slightly, and the cloud percentage drops to 37%, the highest drop in the year. There is a continual diminishment of daylight hours, signaling the looming change of seasons. Weather in June »Weather in July
Nikumanu's weather in July remains relatively stable, retaining its sunny and warm disposition despite the progressing year. July highlights a minimal drop in rainfall, lowering it to 69mm (2.72"), the least in the year. The island enjoys a comfy temperature range with warm, comfortable breezes dancing around in day-to-day activities. Weather in July »Weather in August
August in Nikumanu is distinguished by a marked decrease in humidity, making the temperature feel significantly more comfortable. The month experiences the lowest rainfall days in the year, indicating a break in the island's routine pattern of daily short, heavy showers. Weather in August »Weather in September
The month of September experiences further reduction in rainfall, thus characterizing it as one of the driest months in Nikumanu. The emphasis is on the rise of the sunshine hours to 8.6, giving residents and visitors alike plenty of time to enjoy the outdoors. Weather in September »Weather in October
October ushers in a steady weather pattern holding on to the warm, sunny climate that has defined the past few months in Nikumanu. However, this month experiences a notable increase in sunshine hours, reaching up to 9.8 hours. Given the reduced amount of precipitation and the persisting warm temperatures, the island sports a more arid landscape in October. Weather in October »Weather in November
November carries the trend of increasing sunshine hours, setting the record at 10.4 hours, the highest value for the year. The consistently warm temperatures make the waters of Nikumanu welcoming for all hoping to dive into water-based activities. Weather in November »Weather in December
As the year comes full circle, December in Nikumanu sees an increase in rainfall from the previous months, registering a total of 106mm (4.17"). The cloud percentage rises to 43%, suggesting the possible arrival of overcast skies. Weather in December »Updated: Jan 31, 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
In Nikumanu, Kiribati, during the entire year, the rain falls for 190.3 days and collects up to 938mm (36.93") of precipitation.
The months with the highest UV index in Nikumanu, Kiribati, are January through December, with an average maximum UV index of 7.
The months with the lowest UV index in Nikumanu, Kiribati, are January through December, with an average maximum UV index of 7.
The month of February sees the average lowest temperatures in Nikumanu, reaching 28.2°C (82.8°F) at the peak and 27.2°C (81°F) at the low.
February through April, with an average relative humidity of 78%, are most humid months.
With an average of 7.5h of sunshine, February has the least sunshine of the year.
The month with the most rainfall in Nikumanu, Kiribati, is March, when the rain falls for 17.8 days and typically aggregates up to 128mm (5.04") of precipitation.
In Nikumanu, Kiribati, the peak average temperatures are observed in May, with a high of 28.9°C (84°F) and a low of 27.8°C (82°F).
The month with the shortest days in Nikumanu, Kiribati, is June, with an average of 12h and 0min of daylight.
August through November, with an average relative humidity of 74%, are the least humid months.
The month with the least rainfall in Nikumanu is November, when the rain falls for 10.2 days and typically collects 30mm (1.18") of precipitation.
With an average of 10.4h of sunshine, November has the most sunshine of the year in Nikumanu, Kiribati.
The month with the longest days in Nikumanu is December, with an average of 12h and 12min of daylight.
Nikumanu does not observe Daylight Saving Time (DST). +12 timezone is used throughout the entire year.
Average temperature
Nikumanu, Kiribati
The warmest month (with the highest average high temperature) is May (28.9°C).
The month with the lowest average high temperature is February (28.2°C).
The month with the highest average low temperature is May (27.8°C).
The coldest month (with the lowest average low temperature) is March (27.1°C).
Average pressure
Nikumanu, Kiribati
- Average pressure in January:
1007.5mbar - Average pressure in February:
1007.9mbar - Average pressure in March:
1008.3mbar - Average pressure in April:
1008.9mbar - Average pressure in May:
1009.3mbar - Average pressure in June:
1009.2mbar
- Average pressure in July:
1008.9mbar - Average pressure in August:
1009.4mbar - Average pressure in September:
1009.5mbar - Average pressure in October:
1009.4mbar - Average pressure in November:
1008.3mbar - Average pressure in December:
1007.5mbar
The month with the highest atmospheric pressure is September (1009.5mbar).
The months with the lowest atmospheric pressure are January and December (1007.5mbar).
Average wind speed
Nikumanu, Kiribati
- Average wind speed in January:
19.7km/h - Average wind speed in February:
21.7km/h - Average wind speed in March:
19.5km/h - Average wind speed in April:
17.4km/h - Average wind speed in May:
17.1km/h - Average wind speed in June:
16.9km/h
- Average wind speed in July:
18.4km/h - Average wind speed in August:
18.6km/h - Average wind speed in September:
19.3km/h - Average wind speed in October:
16.7km/h - Average wind speed in November:
17.3km/h - Average wind speed in December:
18.9km/h
The windiest month (with the highest average wind speed) is February (21.7km/h).
The calmest month (with the lowest average wind speed) is October (16.7km/h).
Average humidity
Nikumanu, Kiribati
The months with the highest relative humidity are February, March and April (78%).
The months with the lowest relative humidity are August, September, October and November (74%).
Average rainfall
Nikumanu, Kiribati
- Average rainfall in January:
99mm - Average rainfall in February:
102mm - Average rainfall in March:
128mm - Average rainfall in April:
103mm - Average rainfall in May:
80mm - Average rainfall in June:
79mm
The wettest month (with the highest rainfall) is March (128mm).
The driest month (with the least rainfall) is November (30mm).
Average rainfall days
Nikumanu, Kiribati
- Average rainfall days in January:
14.2 days - Average rainfall days in February:
12.5 days - Average rainfall days in March:
17.8 days - Average rainfall days in April:
19.1 days - Average rainfall days in May:
19.1 days - Average rainfall days in June:
17.3 days
- Average rainfall days in July:
19 days - Average rainfall days in August:
16.2 days - Average rainfall days in September:
15.9 days - Average rainfall days in October:
14.5 days - Average rainfall days in November:
10.2 days - Average rainfall days in December:
14.5 days
The months with the highest number of rainy days are April and May (19.1 days).
The month with the least rainy days is November (10.2 days).
Average daylight / Average sunshine
Nikumanu, Kiribati
- Average daylight in January:
12h and 12min - Average daylight in February:
12h and 12min - Average daylight in March:
12h and 6min - Average daylight in April:
12h and 6min - Average daylight in May:
12h and 6min - Average daylight in June:
12h and 0min
- Average daylight in July:
12h and 0min - Average daylight in August:
12h and 6min - Average daylight in September:
12h and 6min - Average daylight in October:
12h and 6min - Average daylight in November:
12h and 12min - Average daylight in December:
12h and 12min
The month with the longest days is December (Average daylight: 12h and 12min).
The month with the shortest days is June (Average daylight: 12h and 0min).
- Average sunshine in January:
7h and 36min - Average sunshine in February:
7h and 30min - Average sunshine in March:
7h and 36min - Average sunshine in April:
7h and 36min - Average sunshine in May:
8h and 6min - Average sunshine in June:
8h and 24min
- Average sunshine in July:
8h and 12min - Average sunshine in August:
8h and 6min - Average sunshine in September:
8h and 36min - Average sunshine in October:
9h and 48min - Average sunshine in November:
10h and 24min - Average sunshine in December:
7h and 42min
The month with the most sunshine is November (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 7h and 30min).
Average sunshine days
Nikumanu, Kiribati
- Average sunshine days in January:
11.2 days - Average sunshine days in February:
11.7 days - Average sunshine days in March:
10 days - Average sunshine days in April:
8.3 days - Average sunshine days in May:
8.5 days - Average sunshine days in June:
10 days
- Average sunshine days in July:
9.1 days - Average sunshine days in August:
10.2 days - Average sunshine days in September:
9 days - Average sunshine days in October:
12.1 days - Average sunshine days in November:
14.5 days - Average sunshine days in December:
11.5 days
The month with the most sunshine days is November (14.5 days).
The month with the least sunshine days is April (8.3 days).
Average UV index
Nikumanu, Kiribati
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
Nikumanu, Kiribati
The months with the most cloud cover are February, March and April (Cloud cover 44).
The months with the least cloud cover are September, October and November (Cloud cover 36).
Average visibility
Nikumanu, Kiribati
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).
