Weather in Kailua-Kona

Planning your visit to Kailua-Kona? Here you will find the most up-to-date weather information, including current reports, forecasts, and useful charts to make your trip as comfortable as possible.

Kailua-Kona, located in the United States, boasts a delightful tropical climate that attracts visitors all year round. A characteristic feature of the weather here is the amazing stability of temperatures: average values fluctuate in a comfortable range from approximately 18.3°C in February to 21.3°C in August. This means that warm and pleasant weather awaits you regardless of the season of your visit, with minimal fluctuations between daytime highs (20.9°C - 23.8°C) and nighttime lows (15.8°C - 18.8°C).

Although there are no sharp seasonal contrasts in Kailua-Kona, some nuances can be noted. The summer months, roughly from June to September, are the warmest and are also characterized by the highest amount of rainfall, albeit very moderate (16-22 mm). At the same time, the number of "wet days" during this period is at its maximum, reaching 30-31 days per month, which suggests frequent, but likely light and short-lived rains. Winter months, especially January-March, are slightly cooler and drier, with precipitation within 7-10 mm, but also with a large number of days when precipitation is possible (22-25 days).

Overall, the climate of Kailua-Kona can be characterized as very stable and warm. The city does not experience extreme temperatures or a pronounced rainy season with torrential downpours. Instead, travellers should expect predominantly sunny weather with a high probability of short, refreshing rains in almost any month. This makes Kailua-Kona an attractive destination for holidays throughout the year.

In the city of Kailua-Kona, a surprisingly even and warm climate awaits you throughout the year. The average annual temperature fluctuates insignificantly, creating ideal conditions for relaxation in any season. The hottest month is usually August, when the average temperature reaches 21.3°C, and daily highs can rise to 23.8°C. It is slightly cooler, if one can put it that way, in February: the average temperature is 18.3°C, with nighttime lows around 15.8°C and daytime highs up to 20.9°C. Even in the "coldest" months, pleasant warmth reigns here.

Summer months, from June to September, are characterized by consistently warm weather. During the day, the air temperature stays in a comfortable range of 22.8°C - 23.8°C, and nights bring a slight freshness with temperatures around 17.8°C - 18.8°C. Winter in Kailua-Kona is very mild. From December to February, daytime temperatures rarely drop below 20.9°C, and nighttime temperatures remain within 15.8°C - 16.7°C. This means that even in winter, you will need only light clothing. Temperature fluctuations between day and night are present, but they are small, averaging about 5°C, which ensures a comfortable transition from daytime activity to evening rest.

In Kailua-Kona, precipitation falls quite regularly throughout the year, and there is no pronounced dry season in the usual sense, as rainy days are recorded very frequently. However, the total amount of precipitation varies noticeably from month to month, indicating periods with more intense and less intense rains. Snow is uncharacteristic for this region due to the warm climate.

The greatest amount of precipitation usually falls during the summer months. August stands out as the wettest month with an average of 22 mm of rainfall, followed by July with 20 mm. In these months, as well as in June (19 mm) and September (16 mm), it rains almost daily – for example, in July and August, there are 31 rainy days each. Given the large number of rainy days with a moderate total volume of precipitation, it can be assumed that these are most often not heavy downpours, but rather frequent but light or moderate rains.

The period with the least amount of precipitation is usually observed in winter and early spring. The "driest" month in terms of moisture volume is January (7 mm), followed by March (8 mm), as well as November and December (9 mm each). Despite the lower total amount of precipitation during these periods, rains still occur frequently: for example, in January there are on average 24 rainy days, and in February, when 10 mm of precipitation falls, the lowest number of rainy days in the year is recorded – 22. This confirms that light precipitation is a frequent phenomenon in Kailua-Kona all year round.

When planning a trip to Kailua-Kona, prepare for pleasant warm weather at any time of the year. The average annual temperature is comfortable and fluctuates between 18-21°C, with maximum values reaching 21-24°C. Therefore, the basis of your wardrobe should be light summer clothing: T-shirts, shorts, sundresses made of breathable fabrics, as well as swimwear for relaxing on the famous beaches. Do not forget about sun protection – high SPF sunscreen, a hat, and quality sunglasses are simply essential here.

Despite the fact that the total amount of precipitation in Kailua-Kona is small (from 7 to 22 mm per month), pay attention to the high frequency of wet days – rain can fall from 22 to 31 days a month, most often these are short-term and light precipitation. Therefore, a light raincoat or a compact umbrella will become your faithful companions. Comfortable walking shoes, possibly quick-drying ones, will also be very useful. Although there are no sharp temperature changes, bring a light sweater or cardigan – they will come in handy on cool evenings or when visiting air-conditioned places.