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Best time to visit Big Island (Hawaii)

Month-by-month weather, crowds, prices, and festival calendar — so you know exactly when to book.

Best time to visit Big Island (Hawaii), United States

Month-by-month breakdown of weather, crowds, prices, and seasonal highlights.

Month	Weather	Crowds	Prices	Highlights
January	20-27°C, sunny with occasional trade wind showers	high	high	• Whale watching season peaks • Clear skies for stargazing at Mauna Kea ⚠ Post-holiday crowds can linger.
February	20-27°C, sunny with occasional trade wind showers	high	high	• Continued excellent whale watching • Ideal conditions for hiking Volcanoes National Park ⚠ Can still be busy with winter visitors.
March	21-28°C, sunny with scattered showers	moderate	moderate	• End of peak whale watching • Good weather for exploring diverse landscapes ⚠ Crowds begin to thin after spring break.
April	21-28°C, sunny with brief showers	low	low	• Shoulder season with pleasant weather • Excellent visibility for snorkeling and diving • Humpback whales may still be present ⚠ A sweet spot before summer tourism picks up.
May	22-29°C, mostly sunny with trade wind showers	low	low	• Ideal temperatures and low humidity • Fewer crowds mean better access to popular sites • Good conditions for manta ray night dives ⚠ Weather is generally stable and pleasant.
June	23-30°C, sunny with occasional showers	moderate	moderate	• Start of summer, good for beach activities • Longer daylight hours for exploration ⚠ Summer vacationers begin to arrive.
July	23-30°C, sunny with trade wind showers	high	high	• Warmest ocean temperatures for swimming • Kona Coffee Festival (usually late May/early June, but dates can vary) ⚠ Peak summer heat and humidity. Book accommodations well in advance.
August	23-30°C, sunny with trade wind showers	high	high	• Still warm and sunny, good for water sports • Mango season is often at its peak ⚠ Can be very hot and humid; hurricane season is technically active.
September	22-29°C, sunny with brief showers	moderate	moderate	• Shoulder season, fewer crowds than summer • Warm ocean temperatures persist • Good for exploring lava fields ⚠ Hurricane season risk is still present but decreases later in the month.
October	22-28°C, sunny with trade wind showers	low	low	• Excellent weather and low crowds • Manta ray season is very active • Great time for hiking and scenic drives ⚠ A prime time to visit before the winter rush.
November	21-27°C, sunny with increased chance of showers	moderate	moderate	• Beginning of whale watching season • Fewer crowds than December holidays ⚠ Rainfall increases, especially on the Hilo side.
December	20-27°C, sunny with occasional showers	peak	peak	• Peak whale watching season begins • Festive holiday atmosphere ⚠ Highest prices and crowds of the year due to holidays.

Annual events worth timing your trip around

January

Humpback Whale Migration

Thousands of humpback whales migrate to Hawaii's warm waters to breed and calve.

February

Humpback Whale Migration

Peak season for whale watching, with numerous tours and sightings.

March

Humpback Whale Migration

Whale watching continues, though numbers begin to decrease towards the end of the month.

April

Merrie Monarch Festival

The world's premier Hula festival, held in Hilo, showcasing traditional Hawaiian dance and music.

June

Kona Coffee Festival

Celebrates the island's famous coffee with events, tastings, and competitions (dates can vary).

May

Lei Day

A statewide celebration of the lei, with lei-making contests and cultural events across the islands.

December

Humpback Whale Migration

The return of humpback whales marks the start of the winter whale watching season.

Insider timing tips

•The Big Island has distinct microclimates; the Kona (west) side is typically sunny and dry, while Hilo (east) is lush and receives more rain year-round.
•Trade winds are a significant factor, providing cooling breezes on the coast but can be strong at higher elevations.
•While hurricane season technically runs from June to November, the Big Island is rarely directly impacted by major storms.
•Stargazing at Mauna Kea is best during the dry winter months (November-March) due to clearer skies, but access to the summit requires a 4WD vehicle and awareness of altitude effects.
•Shoulder seasons (April-May and September-October) offer a balance of good weather, fewer crowds, and lower prices compared to peak winter and summer holidays.