Climate and monthly weather forecastKwai, Solomon Islands
Climate and monthly weather forecast
The climate of Kwai
Kwai, Solomon Islands possesses a predominant climate classified as Af - Tropical rainforest according to Köppen climate classification. This geographic locale is characterized by high temperatures and heavy rainfall throughout the year. Straddling the equator, this location experiences consistently warm conditions, with monthly average temperatures maintaining themselves between 25.8°C (78.4°F) and 26.6°C (79.9°F) in the low range and 27.9°C (82.2°F) to 28.8°C (83.8°F) in the high range.While temperature steady remains consistently high, humidity and rainfall represent variables exhibiting a wider spread. The relative humidity fluctuates minorly, from 79% to 82% throughout the year. This, in conjunction with the consistently warm temperature, contributes to the muggy and oppressive feel of the atmosphere. Rainfall amounts display significant deviation, presenting monthly averages from as low as 118mm (4.65") to as high as 305mm (12.01").
Another noteworthy characteristic of Kwai's climate is the stable level of daylight hours, with only a slight decrease from 12.6 hours in January to 11.6 hours in June. The amount of sunshine varies more noticeably, peaking at 10.3 hours in November and dropping to a low of 7.3 hours in July. Furthermore, UV index numbers range from 6 to 7 consistently through the year, indicating a high level of radiation risk.
The best time to visit Kwai
Analyzing key weather parameters suggests that the most favorable time to visit Kwai is between April and June. During these months, the average high temperature remains steady around 28.6°C (83.5°F) to 28.8°C (83.8°F), while the average low temperature is 26.3°C (79.3°F) to 26.6°C (79.9°F). Relative humidity diminishes to to a manageable 80% which is relatively low by tropical rainforest standards. Sunshine hours are ample, averaging 8.2 to 8.3 hours per day and the UV index is a high, but manageable, 7. Despite a lower daylight average of 11.6 to 11.9 hours, it is still plenty for outdoor activities.The worst time to visit Kwai
According to weather records, July through September present the less hospitable periods in Kwai. The average temperature, while consistent, is slightly cooler during these times, and the high humidity levels of 82% in July can make the atmosphere feel oppressively muggy. Rainfall averages from 156mm (6.14") in July to 118mm (4.65") in August, making these the months with the highest precipitation. Consequently, these conditions render outdoor activities challenging and less enjoyable.Spring weather in Kwai
Between March and May, Kwai experiences what can be referred to as its "spring" season. The average high temperature varies little, approximately 28.6°C (83.5°F) to 28.8°C (83.8°F), as does the low, between 26.1°C (79°F) to 26.6°C (79.9°F). The increase in rainfall is moderate, from 237mm (9.33") in March to 193mm (7.6") in May. These conditions, alongside comparatively lower relative humidity of 79% to 80% and the abundance of sunshine at around 8.2 to 8.3 hours daily, make spring a delightful season in Kwai.Summer weather in Kwai
The summer months of June to August witness slightly cooler temperatures, dipping to a low of 25.8°C (78.4°F) and a high of 28.2°C (82.8°F). Humidity scales up to about 80% to 82%, making the atmosphere feel slightly more oppressive. Nevertheless, sunshine hours dwindle slightly to 7.3 to 8.1 hours a day. Rainfall increases relatively, averaging from 129mm (5.08") in June, peak to 156mm (6.14") in July before receding to 118mm (4.65") in August.Autumn weather in Kwai
The "autumn" period operates from September to November, featuring steady temperatures of approximately 25.8°C (78.4°F) to 25.9°C (78.6°F) on the low end and 28.1°C (82.6°F) to 28.5°C (83.3°F) on the high end. Relative humidity maintains a constant 80% to 81%. During this season, visitors can enjoy more sunshine, with increases from 8.4 hours in September to a peak of 10.3 hours in November. Although rainfall increases progressively from 122mm (4.8") in September to 213mm (8.39") in November, it is still lower than other seasons.Winter weather in Kwai
"Winter" in Kwai spans December through February. The temperature range from 26.4°C (79.5°F) to 26.1°C (79°F) for the lows and 28.7°C (83.7°F) to 28.5°C (83.3°F) for the highs reveal only a minimal decrease. There's a slight uptick in relative humidity to 79%, but overall the atmospheric comfort remains consistent. Rainfall is the highest during this season, with values from 281mm (11.06") in December to 259mm (10.2") in February. Despite this, visitors can still observe average daylight durations of about 12.4 to 12.6 hours, and sunshine hours of 7.5 to 7.6 per day.Weather in January
Kwai, Solomon Islands' weather in January can be described as balmy with ample moisture. Compared to the later months, it offers the highest maximum temperatures, reaching up to 28.7°C (83.7°F). Heat is accompanied by significant showers, making it a typical tropical winter month. Weather in January »Weather in February
The climate in February in Kwai witnesses a slight decline in extreme temperatures from 28.7°C (83.7°F) in January to 28.4°C (83.1°F). By contrast, this month presents relatively drier conditions compared to the preceding month. Weather in February »Weather in March
March, the first month of the autumn in Kwai, is also a moderately hot month, with temperature in the range of an average high of 28.6°C (83.5°F) and an average low of 26.1°C (79°F). Kwai's March showcases an average high-temperature of a still moderately hot 28.6°C (83.5°F), hardly distinct from February's 28.4°C (83.1°F). Weather in March »Weather in April
April's weather in Kwai takes a turn toward less precipitation and more sunshine. The significant decline in rainfall from 305mm (12.01") in March creates more room for outdoor activities. With temperatures remaining comfortably high and rainfall receding, April marks the onset of drier conditions conducive for tourism. Weather in April »Weather in May
May in Kwai is characterized by further reduction in precipitation. On the thermal scale, May sustains warm temperatures consistent with previous months. As rainfall continues to drop, the scenic beauty of the tropical landscape becomes more accessible. Weather in May »Weather in June
June emerges as the month with the least rainfall, showing a significant decrease from 193mm (7.6") in May to 129mm (5.08"). The reduction in rainfall, coupled with high temperatures, makes it a favored period for visitors. The weather facilitates the exploration of the various tropical wonders offered by the Solomon Islands. Weather in June »Weather in July
Kwai's weather takes a slightly cooler turn in July, with temperatures falling to a year-low of 27.9°C (82.2°F). Compared to June, the reduction in rainfall is offset by a moderate increase in July, but overall, the dry season is still underway. Weather in July »Weather in August
The slight decrease from 28.2°C (82.8°F) to 27.9°C (82.2°F) in July continues to maintain the pleasant conditions in August in Kwai. Warm temperatures, coupled with comparatively less rainfall, define the weather pattern. With consistent temperatures and controlled showers, outdoor activities continue to thrive. Weather in August »Weather in September
Temperatures in Kwai rebound slightly in September, climbing back up to 28.1°C (82.6°F). Paired with a consistent reduction in the amount of rainfall, these conditions both enhance tourists' experience by providing optimal weather for exploration and recreational activities. Weather in September »Weather in October
October in Kwai sees an upsurge in rainfall, marking the beginning of a wetter season. A consistent rise in temperature from September contributes to the tropical feel of the month. Despite the increasing rainfall, temperatures remain consistently high, maintaining the tropical warmth the Solomon Islands are known for. Weather in October »Weather in November
November continues the trend of increased moisture set in October, with an average of 213mm (8.39") rainfall. While the rainy season may limit some outdoor activities, it does not put a damper on the overall tropical charm of the island. Weather in November »Weather in December
December brings traditional tropical warmth and festive spirit to Kwai, accommodating an average high of 28.5°C (83.3°F). Rainfall measures stand at about 281mm (11.06"), making it the second-wettest month after March. Despite the abundant showers and cloud cover, nature flourishes, adding to the uniqueness of the holiday season in this part of the world. Weather in December »Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Kwai, Solomon Islands
The warmest months (with the highest average high temperature) are April and May (28.8°C).
The month with the lowest average high temperature is August (27.9°C).
The month with the highest average low temperature is May (26.6°C).
The coldest months (with the lowest average low temperature) are August and September (25.8°C).
Average pressure
Kwai, Solomon Islands
- Average pressure in January:
1006.9mbar - Average pressure in February:
1007.2mbar - Average pressure in March:
1007.9mbar - Average pressure in April:
1008.9mbar - Average pressure in May:
1009.7mbar - Average pressure in June:
1009.9mbar
- Average pressure in July:
1009.8mbar - Average pressure in August:
1010.4mbar - Average pressure in September:
1010.2mbar - Average pressure in October:
1009.8mbar - Average pressure in November:
1008.3mbar - Average pressure in December:
1007.2mbar
The month with the highest atmospheric pressure is August (1010.4mbar).
The month with the lowest atmospheric pressure is January (1006.9mbar).
Average wind speed
Kwai, Solomon Islands
- Average wind speed in January:
10.7km/h - Average wind speed in February:
12.8km/h - Average wind speed in March:
11.4km/h - Average wind speed in April:
9.3km/h - Average wind speed in May:
10.9km/h - Average wind speed in June:
13.3km/h
- Average wind speed in July:
16.2km/h - Average wind speed in August:
14.9km/h - Average wind speed in September:
14.5km/h - Average wind speed in October:
10.8km/h - Average wind speed in November:
9km/h - Average wind speed in December:
8.4km/h
The windiest month (with the highest average wind speed) is July (16.2km/h).
The calmest month (with the lowest average wind speed) is December (8.4km/h).
Average humidity
Kwai, Solomon Islands
The month with the highest relative humidity is July (82%).
The months with the lowest relative humidity are January, February, March, November and December (79%).
Average rainfall
Kwai, Solomon Islands
- Average rainfall in January:
284mm - Average rainfall in February:
259mm - Average rainfall in March:
305mm - Average rainfall in April:
237mm - Average rainfall in May:
193mm - Average rainfall in June:
129mm
- Average rainfall in July:
156mm - Average rainfall in August:
118mm - Average rainfall in September:
122mm - Average rainfall in October:
184mm - Average rainfall in November:
213mm - Average rainfall in December:
281mm
The wettest month (with the highest rainfall) is March (305mm).
The driest month (with the least rainfall) is August (118mm).
Average rainfall days
Kwai, Solomon Islands
- Average rainfall days in January:
29.4 days - Average rainfall days in February:
26.3 days - Average rainfall days in March:
29.5 days - Average rainfall days in April:
28.2 days - Average rainfall days in May:
28.3 days - Average rainfall days in June:
26.5 days
- Average rainfall days in July:
26.6 days - Average rainfall days in August:
24 days - Average rainfall days in September:
24.3 days - Average rainfall days in October:
28.4 days - Average rainfall days in November:
28.3 days - Average rainfall days in December:
29.3 days
The month with the highest number of rainy days is March (29.5 days).
The month with the least rainy days is August (24 days).
Average daylight / Average sunshine
Kwai, Solomon Islands
- Average daylight in January:
12h and 36min - Average daylight in February:
12h and 24min - Average daylight in March:
12h and 12min - Average daylight in April:
11h and 54min - Average daylight in May:
11h and 42min - Average daylight in June:
11h and 36min
- Average daylight in July:
11h and 42min - Average daylight in August:
11h and 48min - Average daylight in September:
12h and 6min - Average daylight in October:
12h and 18min - Average daylight in November:
12h and 30min - Average daylight in December:
12h and 36min
The month with the longest days is December (Average daylight: 12h and 36min).
The month with the shortest days is June (Average daylight: 11h and 36min).
- Average sunshine in January:
7h and 36min - Average sunshine in February:
7h and 30min - Average sunshine in March:
7h and 42min - Average sunshine in April:
8h and 12min - Average sunshine in May:
8h and 18min - Average sunshine in June:
8h and 6min
- Average sunshine in July:
7h and 18min - Average sunshine in August:
7h and 54min - Average sunshine in September:
8h and 24min - Average sunshine in October:
9h and 42min - Average sunshine in November:
10h and 18min - Average sunshine in December:
9h and 36min
The month with the most sunshine is November (Average sunshine: 10h and 18min).
The month with the least sunshine is July (Average sunshine: 7h and 18min).
Average sunshine days
Kwai, Solomon Islands
- Average sunshine days in January:
0.5 days - Average sunshine days in February:
0.9 days - Average sunshine days in March:
0.5 days - Average sunshine days in April:
0.9 days - Average sunshine days in May:
1 days - Average sunshine days in June:
1.6 days
- Average sunshine days in July:
2.3 days - Average sunshine days in August:
3.8 days - Average sunshine days in September:
3 days - Average sunshine days in October:
1.5 days - Average sunshine days in November:
0.7 days - Average sunshine days in December:
0.5 days
The month with the most sunshine days is August (3.8 days).
The months with the least sunshine days are January, March and December (0.5 days).
Average UV index
Kwai, Solomon Islands
The months with the highest UV index are April, May, June, July, August, September and November (UV index 7).
The months with the lowest UV index are January, February, March, October and December (UV index 6).
Average cloud cover
Kwai, Solomon Islands
The month with the most cloud cover is July (Cloud cover 48).
The month with the least cloud cover is November (Cloud cover 40).
Average visibility
Kwai, Solomon Islands
The months with the highest visibility are June, July, August and September (10km).
The months with the lowest visibility are January, February, March, April, May, October, November and December (9km).





