Hilo, Hawaii Weather by Month

Located on the eastern coast of the Big Island of Hawaii, Hilo is a vibrant and culturally rich city known for its lush landscapes, tropical rainforests, and stunning natural beauty. Located in Hawaii County, Hilo is the largest city on the island and serves as the commercial and cultural hub of the region. With a population of approximately 45,000 residents, Hilo offers a unique blend of Hawaiian tradition and modern amenities, making it a popular destination for visitors from around the world. The city’s diverse population, warm hospitality, and deep connection to the land and sea create a welcoming atmosphere that captivates all who visit. From exploring the breathtaking waterfalls and volcanic landscapes of nearby Hawaii Volcanoes National Park to immersing oneself in the rich history and culture of the area’s indigenous peoples, Hilo offers endless opportunities for adventure, relaxation, and discovery.

Climate and Weather Overview

Hilo enjoys a tropical rainforest climate characterized by warm temperatures, high humidity, and abundant rainfall throughout the year. Located on the windward (eastern) side of the island, Hilo receives the highest amount of precipitation in the state of Hawaii, earning it the title of one of the wettest cities in the United States. The city’s location near the slopes of Mauna Kea and Mauna Loa contributes to its unique microclimate, with rainfall patterns influenced by the surrounding mountains and prevailing trade winds. Despite the frequent rain showers, Hilo also experiences plenty of sunshine, particularly during the morning hours, making it a lush and verdant paradise year-round.

Average Temperature, Precipitation, and Sunny Days by Month

Below is a table detailing the average temperature, precipitation, and sunny days for each month in Hilo, Hawaii:

Month Average Temperature (°F) Precipitation (inches) Sunny Days
January 79 12.1 12
February 79 8.9 13
March 79 10.0 13
April 79 9.4 13
May 80 9.0 14
June 81 8.0 14
July 82 8.9 15
August 82 9.4 14
September 82 9.0 14
October 81 9.8 13
November 80 12.6 12
December 79 14.5 11

Weather by Month

January

January in Hilo brings warm temperatures and abundant rainfall, with an average temperature of 79 degrees Fahrenheit. The month is characterized by frequent rain showers and high humidity, with an average precipitation of 12.1 inches. Despite the rain, January also experiences occasional sunny days, particularly in the morning hours. Outdoor activities during this month may include exploring local botanical gardens, visiting waterfalls, or taking scenic drives along the Hamakua Coast. Indoor activities such as visiting museums, attending cultural events, or exploring Hilo’s vibrant downtown area offer enjoyable alternatives when seeking shelter from the rain.

February

February continues the trend of warm temperatures and occasional rain showers in Hilo, with an average temperature of 79 degrees Fahrenheit. Precipitation decreases slightly from January, averaging 8.9 inches for the month. February offers a mix of sunny days and rainy weather, providing opportunities for outdoor activities such as hiking, snorkeling, or visiting nearby beaches. Residents and visitors may also enjoy exploring Hilo’s farmer’s markets, attending art festivals, or taking scenic drives to view the island’s volcanic landscapes. Indoor activities such as visiting art galleries, attending concerts, or trying traditional Hawaiian cuisine offer enjoyable alternatives when seeking entertainment and relaxation during the winter months.

March

March brings warm temperatures and moderate rainfall to Hilo, with an average temperature of 79 degrees Fahrenheit. Precipitation increases slightly from February, averaging 10.0 inches for the month. March offers a mix of sunny days and rainy weather, making it an ideal time for outdoor activities such as hiking, biking, or exploring local parks and gardens. Residents and visitors may also enjoy taking guided tours of nearby waterfalls, visiting cultural sites, or attending community events and festivals. Indoor activities such as visiting museums, attending workshops, or trying local delicacies offer enjoyable alternatives when seeking entertainment and relaxation during the spring season.

April

April in Hilo brings warm temperatures and occasional rain showers, with an average temperature of 79 degrees Fahrenheit. Precipitation remains relatively consistent with March, averaging 9.4 inches for the month. April offers a mix of sunny days and rainy weather, providing opportunities for outdoor activities such as swimming, snorkeling, or picnicking at local parks and beaches. Residents and visitors may also enjoy exploring Hilo’s downtown area, shopping for souvenirs, or sampling fresh produce at farmer’s markets. Indoor activities such as visiting art galleries, attending cultural performances, or taking cooking classes offer enjoyable alternatives when seeking entertainment and relaxation during the spring season.

May

May brings warm temperatures and decreasing rainfall to Hilo, with an average temperature of 80 degrees Fahrenheit. Precipitation decreases slightly from April, averaging 9.0 inches for the month. May offers plenty of sunshine and warm weather, making it an ideal time for outdoor activities such as hiking, kayaking, or visiting botanical gardens. Residents and visitors may also enjoy exploring Hilo’s historic sites, taking scenic drives along the coast, or attending outdoor concerts and festivals. Indoor activities such as visiting museums, attending art classes, or trying local cuisine offer enjoyable alternatives when seeking entertainment and relaxation during the late spring season.

June

June marks the beginning of the summer season in Hilo, with warm temperatures and occasional rain showers. Average temperatures rise to around 81 degrees Fahrenheit, and precipitation decreases to an average of 8.0 inches for the month. June offers long sunny days and warm evenings, perfect for outdoor activities such as snorkeling, surfing, or swimming at local beaches. Residents and visitors may also enjoy exploring Hilo’s botanical gardens, hiking in nearby rainforests, or taking scenic helicopter tours of the island. Indoor activities such as visiting art galleries, attending cultural performances, or trying tropical cocktails offer enjoyable alternatives when seeking entertainment and relaxation during the summer season.

July

July brings warm temperatures and occasional rain showers to Hilo, with an average temperature of 82 degrees Fahrenheit. Precipitation increases slightly from June, averaging 8.9 inches for the month. July offers long sunny days and warm evenings, making it an ideal time for outdoor activities such as snorkeling, paddleboarding, or whale watching tours. Residents and visitors may also enjoy exploring Hilo’s historic sites, taking guided hikes to volcanic craters, or attending outdoor luaus and festivals. Indoor activities such as visiting museums, attending art classes, or trying Hawaiian cuisine offer enjoyable alternatives when seeking entertainment and relaxation during the summer months.

August

August continues the trend of warm temperatures and occasional rain showers in Hilo. Average temperatures remain around 82 degrees Fahrenheit, and precipitation increases slightly to an average of 9.4 inches for the month. August offers long sunny days and warm evenings, perfect for outdoor activities such as snorkeling, kayaking, or swimming at local beaches. Residents and visitors may also enjoy exploring Hilo’s waterfalls, taking scenic drives to view lava flows, or attending cultural events and performances. Indoor activities such as visiting art galleries, attending cooking classes, or trying tropical fruit tastings offer enjoyable alternatives when seeking entertainment and relaxation during the late summer season.

September

September brings warm temperatures and moderate rainfall to Hilo, with an average temperature of 82 degrees Fahrenheit. Precipitation remains consistent with August, averaging 9.0 inches for the month. September offers a mix of sunny days and rainy weather, providing opportunities for outdoor activities such as hiking, biking, or exploring local parks and gardens. Residents and visitors may also enjoy taking scenic drives along the coast, visiting historic sites and landmarks, or attending community events and festivals. Indoor activities such as visiting museums, attending art workshops, or trying traditional Hawaiian crafts offer enjoyable alternatives when seeking entertainment and relaxation during the early fall season.

October

October heralds the arrival of the wet season in Hilo, with warm temperatures and increasing rainfall. Average temperatures remain around 81 degrees Fahrenheit, and precipitation rises to an average of 9.8 inches for the month. October offers a mix of sunny days and rainy weather, providing opportunities for outdoor activities such as hiking, birdwatching, or exploring local waterfalls. Residents and visitors may also enjoy taking scenic drives to view fall foliage, visiting cultural sites and museums, or attending Halloween-themed events and festivals. Indoor activities such as visiting art galleries, attending cooking classes, or trying local coffee tastings offer enjoyable alternatives when seeking entertainment and relaxation during the fall season.

November

November brings warm temperatures and heavy rainfall to Hilo, as the wet season continues. Average temperatures remain around 80 degrees Fahrenheit, and precipitation increases significantly to an average of 12.6 inches for the month. November offers frequent rain showers and high humidity, making outdoor activities less favorable. However, residents and visitors may still enjoy exploring Hilo’s indoor attractions, such as museums, galleries, and cultural centers. Indoor activities such as attending concerts, workshops, or culinary events offer enjoyable alternatives when seeking entertainment and relaxation during the rainy season.

December

December marks the peak of the wet season in Hilo, with warm temperatures and abundant rainfall. Average temperatures remain around 79 degrees Fahrenheit, and precipitation reaches its highest levels of the year, averaging 14.5 inches for the month. December offers frequent rain showers and high humidity, making outdoor activities limited. However, residents and visitors may still enjoy exploring Hilo’s indoor attractions, such as museums, galleries, and shopping centers. Indoor activities such as attending holiday concerts, craft fairs, or culinary events offer enjoyable alternatives when seeking entertainment and relaxation during the holiday season.

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