Kailua

Planning your day in the city of Kailua? Check out the latest weather data, detailed forecasts, and visual charts right in this section.

In Kailua, a pleasant tropical climate awaits you, characterized by remarkably stable temperatures throughout the year. Average temperatures vary only slightly, making this corner of the USA an attractive destination for a visit in almost any month. You won't encounter sharp cold snaps here; instead, you'll enjoy a consistently warm climate.

The distinct seasons typical of temperate latitudes are virtually non-existent in Kailua. The air temperature remains comfortably warm year-round. The period from June to September is considered the warmest, with average highs around 27-28°C. Winter months, such as January and February, are slightly cooler, but lows usually stay around 20-21°C. A distinctive feature of the local climate is the very low level of precipitation, totaling only 1-2 mm per month. However, the number of days with precipitation can reach 8-15 per month, which likely indicates frequent but very brief and light showers or drizzle that usually don't spoil a vacation.

The climate in Kailua is characterized by pleasant warmth and remarkable stability throughout the year. The annual range of average temperatures is small, from about 22.3°C in February to 26.1°C in September. August and especially September are traditionally considered the hottest months, when average daytime temperatures reach 27.9-28.0°C and nighttime temperatures do not drop below 24°C. The "coolest" months—if one can say that for a tropical climate—are January and February, with average temperatures around 22-23°C, nighttime lows around 20.6-21.2°C, and daytime highs in the 24-25°C range.

The summer months in Kailua, from June to September, offer truly comfortable heat. Average highs stay within 26.9°C - 28.0°C, while minimum nighttime temperatures are a pleasant 23.2°C - 24.2°C. This creates ideal conditions for beach holidays and outdoor activities. The winter period, from December to February, is also exceptionally mild. During the day, the temperature usually rises to 24-25°C, and at night it only drops to 20-22°C. Notably, daily temperature fluctuations in Kailua are small year-round; the difference between daytime highs and nighttime lows rarely exceeds 3-4°C, providing a smooth and predictable temperature profile and making the weather comfortable at any time of day.

Kailua experiences a relatively even distribution of precipitation throughout the year, with no pronounced rainy or dry season. The average monthly precipitation is extremely low, ranging from only 1 to 2 mm. This suggests that rain here is typically light, possibly in the form of short showers or drizzle. Given the high average annual temperatures, snowfall in Kailua is impossible.

The highest amount of precipitation, though still negligible (2 mm), occurs in February, March, April, May, October, and December. At the same time, March and April stand out as the months with the highest number of rainy days—averaging 15 days each. February is also quite damp, with 13 rainy days. This indicates that the spring months may be slightly cloudier, with frequent but light precipitation.

The "driest" months, in terms of both total precipitation (1 mm) and frequency, are September (averaging 8 rainy days), as well as June and August (9 rainy days each). January, July, and November also receive 1 mm of precipitation, but the number of rainy days in these months is slightly higher (10-12 days). Overall, the weather in Kailua does not involve long periods of heavy rain; rather, it's short-lived and light precipitation that can occur in any month.

When planning your trip to Kailua, be prepared for a pleasant tropical climate that delights all year round. With average temperatures comfortably ranging from 22°C to 26°C, light and breathable clothing should form the core of your wardrobe. T-shirts, shorts, sundresses, and skirts made of natural fabrics like cotton or linen are ideal. Don't forget your swimwear—the beaches of Kailua are waiting for you! Essential companions include high SPF sunscreen, a head covering (hat or cap), and quality sunglasses to protect against the bright tropical sun.

Although Kailua is not known for heavy rain—averaging only 1-2 mm of precipitation per month—it's worth noting that the number of days with possible short-lived showers ranges from 8 to 15 per month, especially from February to April. Therefore, a compact umbrella or a light raincoat might come in handy for an unexpected refreshing shower. For exploring the city and its picturesque surroundings, choose comfortable footwear: sandals, flip-flops for the beach, or light sneakers. It might feel slightly cool in the evenings or in air-conditioned rooms, so a thin sweater, cardigan, or windbreaker won't go amiss. Layering isn't as critical here as in places with sharp temperature swings, but having something light to throw on always adds comfort.