Hawaii Volcanoes National Park weather in July

July in Hawaii Volcanoes National Park: nice, rainy, with clean air — one of the best months to visit.

Updated September 2026 · climate normals from ERA5 reanalysis

Hawaii Volcanoes National Park🇺🇸 United States · Hawaii · National park86
  1. 84Jan
  2. 73Feb
  3. 71Mar
  4. 72Apr
  5. 77May
  6. 87Jun
  7. 86Jul
  8. 78Aug
  9. 83Sep
  10. 77Oct
  11. 82Nov
  12. 80Dec

#2 of 12 months in Hawaii Volcanoes National Park · #433 of 1413 destinations to visit in July · comfort 86/100 (tier A)

Days
21°C
Nights
16°C
Wet days
12
Sun
12.2 h
Humidity
78%
Daylight
13 h
Hawaii Volcanoes National Park, United States
Photo: Brocken Inaglory · CC BY-SA 3.0

Traveller notes on Hawaii Volcanoes National Park in July

Forum posters describe the park's roughly 4,000-foot elevation as keeping conditions noticeably cooler than sea level, with lows regularly down into the 50s-60sF even in July - genuinely different from the hot Kona or Hilo coast most visitors are coming from. Posters are direct that the park actually gets almost twice as much rain in summer as in winter, with daily rain a normal occurrence rather than an exception; conditions are described as highly variable, with one visitor getting a warm day while another gets rain and a chilly wind on the same week. Posters consistently recommend sturdy closed-toe hiking shoes, a raincoat, warm layers and plenty of water for any July visit, treating unpredictable weather as the default rather than the exception here.
Tripadvisor community · July · 1 month ago · Read more on Tripadvisor ↗

Other months in Hawaii Volcanoes National Park

Hawaii Volcanoes-forum threads on a May visit describe eruption timing as genuinely unpredictable, one couple recalling a trip booked before any activity started, posters warning it could end the next day or run longer. Regulars call several stops genuinely worthwhile regardless of lava activity, several posters naming Chain of Craters Road, Devastation Trail, Steam Vents and Sulphur Banks as standard non-lava options. Posters call the Crater Rim Trail a real highlight, several regulars naming the stretch between Volcano House and Kilauea Military Camp reliable regardless of the volcano. Regulars call Kipukapuaulu, also known as Bird Park, a real quieter alternative, several threads naming this a good add for a break from crater views. Posters recommend real flexible expectations around lava, several regulars calling this standard given how much eruption activity varies. The record: 19.4C days, 14.3C nights, an extraordinarily high 229.8mm across over 22 days and 83 percent humidity.
HawaiiVolcanoesMayRegular · May · 1 month ago · Read more on Tripadvisor ↗
Hawaii Volcanoes-forum threads on February conditions describe the windward east side of the island as genuinely rainy this month, posters recommending the sunnier west side as a base for anyone wanting to balance park visits with drier weather elsewhere. Regulars call the Kilauea Iki Trail and Thurston Lava Tube solid early-morning picks, arriving around eight considered a real advantage for parking at the main lots. Posters recommend Volcano Village as a practical base, Kilauea Lodge and nearby cottages with kitchens both mentioned repeatedly by regulars. Regulars call sunset running between six and six-thirty this time of year, worth factoring into any late-afternoon viewing plans. Posters recommend real waterproof layers regardless of how the morning looks, conditions here shifting fast given the park's exposure and elevation. The record: 17.7C days feeling like 18C, 12.4C nights, an extraordinarily high 301.2mm across nearly 20 days and 84 percent humidity.
HawaiiVolcanoesFebruaryRegular · February · 1 month ago · Read more on Tripadvisor ↗
Hawaii Volcanoes-forum threads on vog describe it as forming when sulfur dioxide and other volcanic gases react with oxygen and moisture in sunlight, posters calling this a real, ongoing factor for anyone with asthma. Regulars call the Volcano area surprisingly often clear, prevailing trade winds generally pushing the haze toward Kona instead. Posters describe conditions as genuinely variable day to day, wind and weather both real factors in how much vog reaches a given trail. Regulars call checking air quality worthwhile for anyone sensitive, conditions capable of shifting within a day. Posters recommend flexible plans given the visitor center's construction schedule, renovation capable of affecting access as early as September. Regulars call the park still genuinely worth visiting regardless of vog, the volcanic landscape striking on a clear day. The record: 21.2C days feeling like 22C, 15.8C nights, an extraordinarily high 122.8mm across nearly 18 days and 81 percent humidity.
HawaiiVolcanoesSeptemberRegular · September · 1 month ago · Read more on Tripadvisor ↗
Hawaii Volcanoes-forum threads comparing March against May are consistent March sits within a slightly more active stretch for showers, February through April named repeatedly as the wetter run of months here. Posters describe the four-thousand-foot elevation as a real factor, conditions noticeably cooler than the coastal resorts most visitors come from, a jacket genuinely useful regardless of season. Regulars recommend real waterproof layers, a shower entirely possible even on an otherwise clear day. Posters describe visitors exploring the crater rim and steam vents in a light shower, most calling the park worth seeing in whatever conditions show up. Regulars call fog a real possibility at this elevation, worth checking visibility before a viewpoint-focused itinerary. The record: 18.2C days feeling like 19C, 13.1C nights, an extraordinarily high 301.4mm across over 23 days and 83 percent humidity.
HawaiiVolcanoesMarchRegular · March · 1 month ago · Read more on Tripadvisor ↗

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Hawaii Volcanoes National Park climate normals — July

Daytime high21°C / 70°F😎 nice
Nighttime low16°C / 60°F
Feels like (high)22°C / 72°F
Sea temperature26°C / 78°F😎 warm sea
Rainfall97 mm / 3.8 in🌧 rainy
Rainy days12 days
Humidity78%💦 very humid
Dew point14°C / 58°F
Sunshine12.2 h/day
Daylight13.2 h
Wind20 km/h / 13 mph
Air quality (US AQI)20🍃 good

Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.

Crowds in Hawaii Volcanoes National Park in July

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.

Peak crowdsKilauea eruption episodes, Summer break in United States, school holidays in 2 of the markets that fill it(estimated)

JFMAMJJASOND

Peak crowdsBusyShoulder seasonQuiet

Best months for Hawaii Volcanoes National Park'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 weatherHawaii Volcanoes National Park's weather doesn't swing hard through the year — comfort stays fairly steady in every month.

JFMAMJJASOND

What's on in Hawaii Volcanoes National Park in July

Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.

  • Hazard

    Kilauea eruption episodes

    1 Jan – 31 DecVolcanic activityCrowded

    The summit has been erupting in episodes since December 2024, each one a matter of hours rather than weeks, with the alert level moving between watch and advisory. Check the observatory the morning of your visit, not the week before. Source ↗

  • Hazard

    Central Pacific hurricane season

    1 Jun – 30 NovClosures

    Direct hits are rare but August and September bring the near misses. When a storm approaches the park shuts the backcountry, Chain of Craters Road and the visitor centres, as it did for Iselle in 2014. Source ↗

What's on around the world in July →

Nearby, and something's on

Within 300 km of Hawaii Volcanoes National Park — a day trip or a short hop — with something on this month. Never part of the comfort score.

Where is Hawaii Volcanoes National Park?

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Hawaii Volcanoes National Park in July — FAQ

Is July a good time to visit Hawaii Volcanoes National Park?
July in Hawaii Volcanoes National Park: nice, rainy, with clean air — one of the best months to visit. It ranks #2 of 12 months for Hawaii Volcanoes National Park on SeasonMap's comfort score (86/100).
What is the weather like in Hawaii Volcanoes National Park in July?
In July, Hawaii Volcanoes National Park averages a daily high of 21.3°C and a low of 15.7°C, with about 97.4 mm of rain over roughly 11.5 rainy days.
What is the air quality in Hawaii Volcanoes National Park in July?
Hawaii Volcanoes National Park has a mean US Air Quality Index of about 20 in July.

Within 300 km: Hilo's Mango and tropical fruit harvest around 1 Jun – 30 Sep, and Maui's Trade wind and windsurf season around 1 May – 30 Sep.