Haleakalā National Park is one of the most unique places in the world when it comes to weather. Sitting on the massive Haleakalā volcano, the park spans dramatic elevation changes—from sea level to over 10,000 feet (3,055 m). That means conditions can shift quickly, and temperatures vary widely depending on where you are.
If you’re planning a visit, understanding the weather month by month can help you pick the best time for your trip.
Overview of Haleakalā’s Climate
Haleakalā has a tropical high-elevation climate:
- Summit areas are cold, dry, and windy
- Lower Kipahulu district is warm, humid, and lush
- Weather can change rapidly—even within hours
Haleakalā Weather by Month
January
- Summit temps: 30–60°F (-1–15°C)
- Conditions: Cool, often cloudy, occasional rain
- One of the wettest months, especially in Kipahulu
- Sunrise visits can be freezing with strong winds
👉 Bring layers and a jacket if visiting the summit.
February
- Similar to January
- Slightly less rain but still part of the wet season
- Great for fewer crowds
👉 Expect dramatic cloud formations—great for photography.
March
- Transition month toward drier weather
- Temps slowly warming
- Rain still possible but less frequent
👉 Good balance of weather and crowd levels.
April
- Drier conditions begin
- Wildflowers may start blooming in some areas
- Summit remains chilly in mornings
👉 One of the best months for hiking.
May
- Warm, dry, and stable weather
- Excellent visibility at the summit
- Lower humidity than summer
👉 Ideal for sunrise/sunset viewing.
June
- Start of summer
- Dry season in full swing
- Warmer at lower elevations, still cool at summit
👉 Great time for exploring both summit and coastal areas.
July
- Warmest and driest period
- Summit temps: 40–65°F (4–18°C)
- Popular tourist season
👉 Expect crowds, especially at sunrise.
August
- Similar to July
- Very dry and sunny
- Occasional trade winds
👉 Excellent for stargazing due to clear skies.
September
- Slight drop in temperatures
- Still dry and pleasant
- Fewer crowds than peak summer
👉 One of the best months overall.
October
- Transition back toward wetter season
- Still relatively dry early in the month
- Comfortable temperatures
👉 Great for hiking before rains increase.
November
- Rainfall begins to increase
- Cooler temperatures
- Clouds more frequent at summit
👉 Bring rain gear, especially for Kipahulu.
December
- Cooler and wetter
- Summit can feel very cold (near freezing at sunrise)
- Holiday crowds increase
👉 Dress warmly—it surprises many visitors.
| Month | Avg High (°F) | Avg Low (°F) | Rainfall (inches) | Sun (hrs/day) |
|---|---|---|---|---|
| January | 58 | 41 | 2.5 | 6 |
| February | 58 | 40 | 2.2 | 7 |
| March | 59 | 41 | 2.0 | 7 |
| April | 61 | 43 | 1.5 | 8 |
| May | 63 | 45 | 1.0 | 9 |
| June | 65 | 47 | 0.6 | 10 |
| July | 66 | 48 | 0.5 | 10 |
| August | 67 | 49 | 0.6 | 9 |
| September | 66 | 48 | 0.8 | 9 |
| October | 64 | 47 | 1.2 | 8 |
| November | 61 | 44 | 1.8 | 7 |
| December | 59 | 42 | 2.3 | 6 |
Quick Insights
- Sunniest months: May–July (great for sunrise views and stargazing)
- Wettest months: December–February
- Best balance: April, May, September
Key Weather Tips
1. Dress in Layers
You can experience:
- Tropical heat at the coast
- Near-freezing temps at the summit
2. Expect Wind
Summit winds can be strong year-round, especially early morning.
3. Sunrise = Coldest Time
Even in summer, sunrise at Haleakalā can feel like winter.
4. Check Conditions Before You Go
Cloud cover can completely block views at the summit.
Best Time to Visit Haleakalā
- Best overall: April – October
- Best for fewer crowds: May, September
- Best for lush scenery: Winter months (but wetter)
- Best for stargazing: Summer (clear skies)
20 helpful FAQs about the weather at Haleakalā National Park
1. What is the weather like at Haleakalā National Park?
The park has highly variable weather due to elevation differences, ranging from warm tropical conditions to cold, alpine-like temperatures at the summit.
2. How cold does it get at the summit?
Temperatures can drop to around 30°F (-1°C) or lower, especially at sunrise.
3. Does it snow in Haleakalā National Park?
Yes, light snowfall can occur in winter months at the summit, though it’s rare.
4. What is the best time to visit for good weather?
April through October typically offers the driest and most stable conditions.
5. Is Haleakalā cold year-round?
The summit is cool to cold year-round, while lower elevations remain warm.
6. Does it rain often in the park?
Rainfall varies—summit areas are relatively dry, but the Kipahulu district is often wet and lush.
7. What should I wear to Haleakalā?
Dress in layers. You may need a jacket, even if it’s hot at the beach.
8. Why is it so windy at the summit?
High elevation and exposure make the summit prone to strong, persistent winds.
9. How is the weather during sunrise?
Very cold, windy, and sometimes cloudy—conditions can change quickly.
10. Is sunset warmer than sunrise?
Yes, slightly. Daytime warming makes sunset conditions more comfortable.
11. Are summers hot in Haleakalā?
Not at the summit—temperatures remain mild, though lower areas can be warm.
12. What months have the most sunshine?
May through July typically have the highest sunshine hours.
13. When is the rainy season?
November through March is generally the wetter period.
14. Can clouds block the view?
Yes, cloud cover can completely obscure summit views at any time of year.
15. Is the weather predictable?
Not always—conditions can shift rapidly within hours.
16. How different is Kipahulu weather from the summit?
Kipahulu is warm, humid, and rainy, while the summit is cool and dry.
17. Is it safe to visit during bad weather?
Yes, but visibility and road conditions may be affected—always check forecasts.
18. Does altitude affect temperature?
Yes, temperatures drop significantly with elevation (about 3–5°F per 1,000 ft).
19. What’s the best time for stargazing?
Summer months offer the clearest skies and best visibility.
20. Do I need to check the weather before visiting?
Absolutely. Checking conditions can help you avoid clouds, rain, or unsafe driving conditions.
Final Thoughts
Weather at Haleakalā volcano isn’t just something to plan around—it’s part of the experience. From standing above the clouds at sunrise to hiking through misty rainforests, every month offers something different.
If you prepare for the extremes, Haleakalā rewards you with some of the most unforgettable landscapes on Earth.