Kona weather in March
March in Kona: hot, a little rain, with clean air — one of the best months to visit.
Updated September 2026 · climate normals from ERA5 reanalysis
#2 of 12 months in Kona · #81 of 1413 destinations to visit in March · comfort 92/100 (tier S)
- Days
- 27°C
- Nights
- 21°C
- Wet days
- 13
- Sun
- 10.6 h
- Humidity
- 82%
- Daylight
- 12 h
Traveller notes on Kona in March
March in Kona is the tail of whale season — humpbacks run from about mid-December to late March, thinning as the month goes on, so mid-March is still reliable and the very end of it is not. On rain, the forum's line that March is one of the Big Island's wettest months is about the windward side: on Kona's leeward coast March is one of the drier months, ten rain-days against fourteen through the summer. The variable that is genuinely local is vog — volcanic haze concentrates in the Kailua-Kona area and can bring headaches and eye and lung irritation, more seriously for asthma. The regulars' fix is geographic: drive north a few beaches and it largely clears.
Other months in Kona
Kona forum regulars are consistent about September: it's hot and sticky, and the trade winds that usually cool the coast can break down for stretches, so there's less relief than you'd expect. It's still technically hurricane season, and while a direct hit is rare, the remnants of a passing system can bring heavy surf and a burst of heavy rain even on an otherwise sunny week. That said, several posters described near-perfect two-week stretches with no crowds and easy access to snorkeling spots - it's a gamble, but one that tends to pay off more often than not.
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Kona climate normals — March
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Kona in March
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
BusySpring break in United States(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Kona's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Fair weatherKona's weather doesn't swing hard through the year — comfort stays fairly steady in every month.
What's on in Kona in March
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Hazard
Vog from Kīlauea
1 Jan – 31 DecVolcanic activitySulphur haze from the volcano drifts round the south point and settles along this coast, which is why the Kona side gets the hazy afternoons rather than the windward towns. It comes and goes with the eruption and the wind, not with the calendar. Source ↗
- Nature
Humpback whale season
1 Dec – 15 Apr · usuallyHumpbacks come down from Alaska to breed and calve in the warm water off the leeward coast, with the peak numbers in February and March. You can hear them through the hull on a morning boat, and often see blows from the shore road. Source ↗
Nearby, and something's on
Within 300 km of Kona — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Kona?
Kona in March — FAQ
- Is March a good time to visit Kona?
- March in Kona: hot, a little rain, with clean air — one of the best months to visit. It ranks #2 of 12 months for Kona on SeasonMap's comfort score (92/100).
- What is the weather like in Kona in March?
- In March, Kona averages a daily high of 27.4°C and a low of 21.2°C, with about 67.4 mm of rain over roughly 13.2 rainy days.
- What is the air quality in Kona in March?
- Kona has a mean US Air Quality Index of about 28 in March.
Within 300 km: Hilo's Humpback whale season on 15 Nov – 15 May, and Maui's Humpback whale season on 15 Dec – 15 May.