Perched high above the island of Maui, Haleakalā National Park is known for its otherworldly volcanic crater, breathtaking sunrises, and surprisingly diverse climate. Weather here varies dramatically depending on elevation—coastal areas are warm and tropical, while the summit (over 10,000 ft / 3,000 m) can feel like a desert or even alpine environment.
Below is a month-by-month breakdown to help you choose the best time to visit.
Haleakala National Park Temperatures by Month
You can click the image below to view the full-size weather chart for Haleakala National Park.
January
- Summit temps: 30–60°F (-1 to 16°C)
- Conditions: Cool, often windy, occasional rain
- Highlights: Clear skies between storms; fewer crowds after holidays
January is one of the cooler months. Sunrise visits can be freezing, so layered clothing is essential.
February
- Summit temps: 30–60°F (-1 to 16°C)
- Conditions: Similar to January, with slightly less rain
- Highlights: Peak whale season visible from lower elevations
Weather remains cool and unpredictable, but visibility is often excellent.
March
- Summit temps: 35–65°F (2 to 18°C)
- Conditions: Transition toward drier weather
- Highlights: Wildflowers begin blooming in some areas
March offers a balance of mild weather and fewer tourists.
April
- Summit temps: 40–70°F (4 to 21°C)
- Conditions: Drier, more stable
- Highlights: Great hiking conditions
One of the best months to explore trails like Sliding Sands.
May
- Summit temps: 45–75°F (7 to 24°C)
- Conditions: Warm, dry, and clear
- Highlights: Ideal for sunrise and sunset viewing
May is widely considered one of the best months for visiting.
June
- Summit temps: 50–80°F (10 to 27°C)
- Conditions: Dry season begins
- Highlights: Long daylight hours
Expect excellent visibility and comfortable conditions.
July
- Summit temps: 55–80°F (13 to 27°C)
- Conditions: Warmest and driest period
- Highlights: Peak tourist season
Great weather, but expect more crowds—especially at sunrise.
August
- Summit temps: 55–80°F (13 to 27°C)
- Conditions: Dry, occasionally hazy due to trade winds
- Highlights: Consistent weather
Another reliable month, though haze can sometimes affect views.
September
- Summit temps: 55–80°F (13 to 27°C)
- Conditions: Warm, slightly less crowded than summer
- Highlights: Excellent hiking conditions
A sweet spot for good weather and fewer visitors.
October
- Summit temps: 50–75°F (10 to 24°C)
- Conditions: Beginning of wetter season
- Highlights: Changing vegetation and fewer crowds
Still a great time to visit before winter rains increase.
November
- Summit temps: 45–70°F (7 to 21°C)
- Conditions: Increasing rain and wind
- Highlights: Dramatic cloud formations
Weather becomes more variable, but scenery is stunning.
December
- Summit temps: 35–65°F (2 to 18°C)
- Conditions: Cooler, wetter, windy
- Highlights: Occasional snow or frost at the summit
A unique time when Haleakalā can feel almost alpine.
| Month | Avg High (°F) | Avg Low (°F) | Rainfall (inches) | Sun (hrs/day) |
|---|---|---|---|---|
| January | 57 | 41 | 2.3 | 7.2 |
| February | 57 | 41 | 1.8 | 7.6 |
| March | 58 | 42 | 1.7 | 8.2 |
| April | 60 | 44 | 1.2 | 8.8 |
| May | 62 | 46 | 0.8 | 9.4 |
| June | 64 | 48 | 0.6 | 10.2 |
| July | 65 | 49 | 0.5 | 10.4 |
| August | 66 | 50 | 0.6 | 9.8 |
| September | 66 | 50 | 0.8 | 9.2 |
| October | 64 | 48 | 1.5 | 8.6 |
| November | 61 | 45 | 2.2 | 7.8 |
| December | 58 | 42 | 2.5 | 7.2 |
Key Weather Insights
1. Elevation Matters
The summit of Haleakalā is often 30°F (17°C) colder than sea level. Always prepare for cold conditions—even if it’s hot at the beach.
2. Best Overall Months
- April to June and September offer the best mix of weather and crowd levels.
3. Sunrise vs. Sunset
- Sunrise is colder, windier, and more crowded
- Sunset offers similar views with milder conditions
4. Rain Patterns
- Wet season: November–March
- Dry season: April–October
What to Pack
No matter the month, bring:
- Warm layers (jacket, gloves for sunrise)
- Sunscreen (UV is strong at high elevation)
- Water and snacks
- Sturdy hiking shoes
Haleakalā National Park Weather FAQs
1. What is the weather like at Haleakalā National Park?
Weather varies dramatically by elevation. The summit is cool, dry, and often windy, while lower areas are warmer and more tropical.
2. How cold does it get at the summit?
Temperatures can drop to around 30°F (-1°C), especially at sunrise and during winter months.
3. Does it snow in Haleakalā NP?
Yes, snow is rare but possible, usually between December and February at the summit.
4. What is the best time of year to visit for good weather?
The best months are typically April through June and September, offering clear skies and mild conditions.
5. Is Haleakalā colder than the beaches in Maui?
Yes, the summit can be 30°F (17°C) colder than coastal areas in Maui.
6. What should I wear to Haleakalā?
Layered clothing is essential—bring a jacket, long pants, and closed-toe shoes.
7. Is sunrise colder than sunset?
Yes, sunrise is significantly colder and windier than sunset.
8. Does it rain often in Haleakalā National Park?
Rain is more common in winter (November–March), but the summit is generally dry compared to other parts of Maui.
9. What is the windiest time of year?
Winter months tend to be windier, especially at higher elevations.
10. How many sunny days does Haleakalā get?
The park enjoys 7–10+ hours of sunshine daily, especially during summer.
11. Is the weather predictable?
Not always—weather can change quickly, especially at the summit.
12. Can clouds block the sunrise view?
Yes, clouds can obscure views, but they can also create stunning “cloud inversion” effects.
13. What is the driest month?
Typically June or July, with minimal rainfall.
14. What is the wettest month?
Usually December or January, during Hawaii’s rainy season.
15. Is it safe to visit during bad weather?
Yes, but conditions like fog, wind, and cold temperatures can make driving and hiking more challenging.
16. How strong is the sun at Haleakalā?
UV exposure is very strong due to high elevation—sunscreen is a must.
17. Does weather affect hiking conditions?
Yes, trails can become slippery or foggy, especially after rain.
18. Is summer the hottest time at Haleakalā?
Summer is the warmest, but temperatures at the summit still remain relatively mild.
19. Are there big temperature swings during the day?
Yes, temperatures can change quickly, especially between sunrise and midday.
20. Do I need to check the forecast before visiting?
Absolutely—checking weather conditions before heading up to Haleakalā National Park is highly recommended.
Final Thoughts
Weather at Haleakalā National Park is as dynamic as its landscape. Whether you’re chasing a sunrise above the clouds or hiking through volcanic terrain, understanding seasonal patterns will help you get the most out of your visit.