Our verdict
The best time to visit Kauai is March-May
In the summer months, temperatures can reach as high as 27℃ (81℉) in Kauai. The weather at night in the winter, which is around February-time, can get down to a minimum of 19℃ (66℉).
If you’re a sun-chaser and want to visit Kauai when the days are longest, you should visit in June. March sees the most amount of rain in a month if you’re ok with chancing getting drenched, so if you’re looking to stay dry, visit in April instead.
If you want to learn everything you need to know about the best times to travel to Kauai, the weather and stats by month and so much more, make sure you keep reading. Once you’re ready, we’ve included a bunch of our favourite online booking tools to help you find the best deals on flights, accommodation and anything else you’ll need for your trip. Happy reading!
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Kauai seasons
Before you continue, it’s important to know when the seasons are in Kauai as they might be different to yours depending on where in the world you’re travelling from. Kauai is in the Northern Hemisphere, so the seasons fall during these months:
| Season | Months |
|---|---|
| Summer | June to August |
| Autumn/fall | September to November |
| Winter | December to February |
| Spring | March to May |
Average temperatures in Kauai
If the temperature is a big factor for you to help you decide when to visit, the chart below shows the average minimum and maximum temperatures in Kauai for each month side-by-side so you can easily see the difference in weather throughout the year. To see the temperatures in both Celsius (°C) and Fahrenheit (°F), hover or tap the shaded boxes on the graph.
Kauai climate by month
If you already have a rough idea about which months you might want to travel, the section below shows a detailed breakdown of the climate in Kauai for each month so you can see if it all suits your wants and needs. Scroll down, or use the quick menu below to jump to your preferred month.
Jump to:
Kauai in January
- Average temperature: 22℃ (72℉)
- Average high temperature: 24℃ (74℉)
- Average low temperature: 21℃ (70℉)
- Average humidity: 75%
- Average sunny days: 13 days
- Average rainfall: 40mm (2") over 13 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Kauai in January, make sure you pack t-shirts and light clothing.
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Kauai in February
- Average temperature: 22℃ (71℉)
- Average high temperature: 23℃ (73℉)
- Average low temperature: 20℃ (69℉)
- Average humidity: 76%
- Average sunny days: 8 days
- Average rainfall: 46mm (2") over 15 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Kauai in February, make sure you pack t-shirts and maybe a light jumper for the evenings.
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Kauai in March
- Average temperature: 22℃ (71℉)
- Average high temperature: 23℃ (73℉)
- Average low temperature: 21℃ (69℉)
- Average humidity: 76%
- Average sunny days: 6 days
- Average rainfall: 64mm (3") over 19 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Kauai in March, make sure you pack t-shirts and maybe a light jumper for the evenings.
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Kauai in April
- Average temperature: 23℃ (73℉)
- Average high temperature: 24℃ (75℉)
- Average low temperature: 22℃ (71℉)
- Average humidity: 76%
- Average sunny days: 6 days
- Average rainfall: 33mm (1") over 18 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Kauai in April, make sure you pack t-shirts and light clothing.
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Kauai in May
- Average temperature: 24℃ (75℉)
- Average high temperature: 25℃ (77℉)
- Average low temperature: 22℃ (72℉)
- Average humidity: 76%
- Average sunny days: 7 days
- Average rainfall: 40mm (2") over 19 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Kauai in May, make sure you pack t-shirts and light clothing.
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Kauai in June
- Average temperature: 24℃ (76℉)
- Average high temperature: 26℃ (78℉)
- Average low temperature: 23℃ (74℉)
- Average humidity: 77%
- Average sunny days: 5 days
- Average rainfall: 43mm (2") over 18 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Kauai in June, make sure you pack t-shirts and light clothing.
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Kauai in July
- Average temperature: 25℃ (77℉)
- Average high temperature: 26℃ (79℉)
- Average low temperature: 24℃ (75℉)
- Average humidity: 77%
- Average sunny days: 4 days
- Average rainfall: 34mm (1") over 20 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Kauai in July, make sure you pack t-shirts and light clothing.
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Kauai in August
- Average temperature: 25℃ (78℉)
- Average high temperature: 26℃ (80℉)
- Average low temperature: 24℃ (76℉)
- Average humidity: 77%
- Average sunny days: 3 days
- Average rainfall: 39mm (2") over 20 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Kauai in August, make sure you pack t-shirts and light clothing.
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Kauai in September
- Average temperature: 25℃ (78℉)
- Average high temperature: 27℃ (80℉)
- Average low temperature: 24℃ (76℉)
- Average humidity: 76%
- Average sunny days: 5 days
- Average rainfall: 39mm (2") over 19 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Kauai in September, make sure you pack t-shirts and light clothing.
Kauai in October
- Average temperature: 25℃ (77℉)
- Average high temperature: 26℃ (79℉)
- Average low temperature: 24℃ (76℉)
- Average humidity: 77%
- Average sunny days: 6 days
- Average rainfall: 52mm (2") over 19 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Kauai in October, make sure you pack t-shirts and light clothing.
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Kauai in November
- Average temperature: 24℃ (75℉)
- Average high temperature: 25℃ (77℉)
- Average low temperature: 23℃ (74℉)
- Average humidity: 76%
- Average sunny days: 5 days
- Average rainfall: 52mm (2") over 19 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Kauai in November, make sure you pack t-shirts and light clothing.
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Kauai in December
- Average temperature: 23℃ (73℉)
- Average high temperature: 24℃ (75℉)
- Average low temperature: 22℃ (72℉)
- Average humidity: 77%
- Average sunny days: 7 days
- Average rainfall: 56mm (2") over 18 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Kauai in December, make sure you pack t-shirts and light clothing.
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