Kailua, Big Island weather in August 2025

Expect 23°C daytime maximum temperatures in the shade with on average -9999 hours of sunshine per day in Kailua, Big Island in August. Check more long-term weather averages for Kailua, Big Island in August before you book your next holiday to Hawaii in 2025/2026.

• 23
  23°C max day temperature
• 17
  17 days with some rainfall
• 15
  15°C min night temperature
• 13
  13 hours of daylight per day
• M
  Moderate heat & humidity
• 50
  50 mm of monthly rainfall
• 11
  11+ (Extreme) UV index
• 27
  27°C sea temperature

More about Kailua, Big Island

• 
  Overview
• 
  Best time to visit
• 
  Weather by month
• 
  5-day weather forecast
• 
  Destinations
• 
  Travel advice
• 
  Deals & discounts

Kailua, Big Island by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Hawaii

• Go City^*
• Travelbag^*
• Titan Travel^*
• Love Holidays^*

Air Canada: Low fares to the Americas

Sale

• Save on flights to Canada, USA & the rest of the Americas
• Book online for low fares with Air Canada
• Fly to Toronto, Vancouver, New York, Cancun & more

Go to Air Canada deal >>

View all Air Canada offers

The August weather guide for Hawaii (Kailua, Big Island) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

Back to top

More about the USA

Kailua, Big Island August sunrise & sunset times

Browse the sunrise and sunset times for Kailua, Big Island in August 2025. Select a month to view Kailua, Big Island sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Related posts

Popular travel offers

Explore holidays in the sun for less

• Beach holidays
• Family holidays
• City breaks
• Summer holidays
• Winter sun holidays
• Holiday offers
• Top travel brands
• Airlines & flights
• Discount hotels
• Airport parking deals
• TUI
• Jet2holidays
• easyJet holidays
• Love Holidays
• Black Friday sales

More holidays

Airport parking

• Manchester Airport
• Stansted Airport
• Bristol Airport
• Luton Airport
• Birmingham Airport
• Edinburgh Airport
• Gatwick Airport
• Glasgow Airport
• Newcastle Airport

More parking

Airport lounges

• Manchester Airport
• Birmingham Airport
• Bristol Airport
• Edinburgh Airport
• Glasgow Airport
• Heathrow Airport
• Newcastle Airport
• Stansted Airport
• Gatwick Airport

More lounges

Top ^