Climate of Kailua CDP, Hawaii

Kailua CDP, Hawaii

Kailua, located on the windward (eastern) side of the island of Oahu in Hawaii, is a captivating community known for its stunning beaches, lush landscapes, and laid-back atmosphere. The climate in Kailua is tropical, characterized by warm temperatures, consistent trade winds, and distinct wet and dry seasons. To provide a comprehensive understanding of Kailua’s climate, it’s essential to explore temperature patterns, precipitation trends, and the broader impact of the environment on the community.

Geographical Overview:

Kailua is situated on the eastern coast of Oahu, approximately 12 miles northeast of downtown Honolulu. Nestled between the dramatic Koolau mountain range to the west and the expansive Pacific Ocean to the east, Kailua boasts a picturesque setting. The community encompasses not only the town of Kailua but also the nearby Lanikai and Waimanalo neighborhoods.

Climate Classification:

Kailua falls under the tropical savanna climate category according to the Köppen climate classification system. This classification is marked by warm temperatures throughout the year, a distinct wet season, and a pattern of consistent trade winds.

Temperature Patterns:

The temperature in Kailua is relatively consistent throughout the year due to its tropical climate. Average high temperatures typically range from the mid-70s to the low 80s Fahrenheit. Nighttime temperatures generally drop to the mid-60s to low 70s°F. While there is not a significant temperature difference between seasons, Kailua benefits from the cooling effects of the trade winds that sweep across the island.

The trade winds, originating from the northeast, play a crucial role in moderating temperatures and providing a refreshing breeze. These winds contribute to the comfortable climate and help disperse any heat and humidity.

Wet and Dry Seasons:

Kailua experiences a distinct wet and dry season. The wet season typically occurs from November to March, coinciding with the winter months. During this period, the northeast trade winds bring moisture-laden air, resulting in increased rainfall. While rain showers are frequent, they are often brief, and the sun quickly returns. The mountains on the windward side of the island contribute to orographic lifting, enhancing rainfall in certain areas.

The dry season, from April to October, sees reduced rainfall, and the weather tends to be sunnier and drier. Trade winds persist during this time, providing a consistent and pleasant climate for residents and visitors. The dry season is characterized by clear skies and a vibrant, lush landscape.

Precipitation and Rainfall:

Kailua receives a significant amount of rainfall, particularly during the wet season. The average annual precipitation is around 120 inches, making it one of the wettest areas on Oahu. Rainfall can vary within the region, with windward areas typically receiving more precipitation due to orographic effects.

Despite the substantial rainfall, the showers are often localized and intermittent, contributing to the lush greenery and vibrant flora that define Kailua’s landscape. The rain nourishes the diverse vegetation, including palm trees, tropical flowers, and lush foliage.

Trade Winds and Windward Conditions:

The trade winds are a defining feature of Kailua’s climate. These easterly winds, originating from the northeast, consistently blow across the island, providing natural air conditioning and moderating temperatures. The windward side of Oahu, where Kailua is located, experiences the full force of the trade winds, leading to more significant rainfall in comparison to the leeward (western) side.

The consistent trade winds also make Kailua an ideal location for water sports such as windsurfing and kiteboarding. The reliable wind patterns create favorable conditions for these activities along the shores of Kailua Bay.

Population Overview (as of 2019):

According to CITIESPLUSTOWNS.COM, Kailua had a population of approximately 39,364 residents. The community’s population includes a mix of long-time residents, newcomers, and individuals drawn to the area’s natural beauty and outdoor lifestyle. Kailua is known for its close-knit community feel, and residents often share a deep appreciation for the unique environment that surrounds them.

The population growth in Kailua is influenced by factors such as its proximity to Honolulu, the availability of outdoor recreational activities, and the appeal of living in a tropical paradise with a distinct local culture.

Outdoor Recreation and Beach Culture:

Kailua’s climate plays a central role in shaping the outdoor recreational opportunities and beach culture that define the community. The pristine white-sand beaches, including Kailua Beach and Lanikai Beach, are popular destinations for residents and visitors alike. The warm tropical temperatures, combined with the refreshing trade winds, create ideal conditions for swimming, kayaking, snorkeling, and other water-related activities.

The lush landscapes and mountainous terrain provide opportunities for hiking and exploring nature trails. The Kawainui Marsh, one of the largest wetlands in Hawaii, offers birdwatching and a chance to experience the rich biodiversity of the region.

Cultural Events and Festivals:

Kailua’s climate contributes to the outdoor lifestyle that is celebrated through various cultural events and festivals. Local gatherings, music festivals, and community events often take place in outdoor venues, taking advantage of the pleasant weather. Residents and visitors can enjoy live music, food festivals, and cultural celebrations against the backdrop of the scenic surroundings.

Environmental Conservation and Sustainability:

Given its natural beauty and ecological significance, Kailua is committed to environmental conservation and sustainability. Efforts to preserve and protect the area’s unique ecosystems, including the ocean, beaches, and mountains, are central to the community’s values. Initiatives such as beach cleanups, conservation projects, and sustainable practices aim to maintain the delicate balance between human activities and the natural environment.


Kailua, Hawaii, with its tropical savanna climate, offers residents and visitors a unique blend of natural beauty, outdoor recreation, and a sense of community. The consistent trade winds, warm temperatures, and distinct wet and dry seasons contribute to the area’s allure, making it a haven for those seeking a laid-back lifestyle in a breathtaking tropical setting.

As Kailua continues to thrive, its climate will remain a key factor in shaping the community’s identity and lifestyle. The commitment to environmental conservation, appreciation for cultural events, and the enjoyment of outdoor activities underscore the symbiotic relationship between Kailua’s climate and the well-being of its residents.

Kailua CDP, Hawaii