In short
Maui weather in December is usually warm, with Kahului-area daytime temperatures near 83°F (28°C) and nighttime temperatures near 66°F (19°C) in mid-December climate normals. December also brings Maui's wetter winter pattern, so plan beach and ocean activities around the live forecast, surf exposure, posted warnings, and your comfort in the water.
Key takeaways
- ☀️ December daytime temperatures around Kahului are commonly in the low 80s°F, while evenings are cooler and may call for a light layer.
- 🌦️ December is part of Maui's wetter season, but rainfall is highly localized, so a shower in one area does not describe conditions across the island.
- 🌊 You can swim and snorkel in Maui in December, but ocean safety depends on the specific beach, swell direction, wind, currents, and official warnings on that day.
- South-facing shores are often less exposed to winter north swells than north-facing shores, but conditions can still change quickly.
- Reserve flexible outdoor plans early in the day and make the final go-or-no-go decision from current conditions, not monthly averages.
On this page
- What does Maui weather feel like in December?
- Can you swim and snorkel in Maui in December?
- Does rain in December cancel outdoor plans?
- When should you schedule a weather-dependent ocean activity?
- What should you pack for Maui in December?
- Is December a good time to go to Maui?
- Frequently asked questions
- How should you turn a December forecast into a plan?
Maui in December can feel like a welcome escape from winter: warm afternoons, mild evenings, and ocean water that remains comfortable for many visitors. The useful distinction is this: climate tells you what December is usually like, while the day's wind, rain, surf, currents, and advisories determine what is sensible to do at a particular beach.
What does Maui weather feel like in December?
December is warm by most visitors' standards, especially at lower coastal elevations, but it is one of Maui's cooler months. A National Weather Service daily climate report for Kahului lists mid-December normals of 83°F (28°C) for the high and 66°F (19°C) for the low, which is a useful baseline for central and leeward coastal trip planning, not a promise for every part of the island. National Weather Service climate data show why a T-shirt-and-shorts day can still end with a cool, breezy dinner outdoors.
Maui has sharp differences in elevation and exposure. A low-elevation beach area can be warm while a higher lookout is cold, cloudy, or wet. Treat an app's single temperature number as a starting point, then check the forecast for the exact part of Maui where you will be.
| What to expect | Typical December planning takeaway | What can change it |
|---|---|---|
| Daytime air temperature | Warm beach weather at lower elevations | Cloud cover, elevation, and wind |
| Evening temperature | A light layer can be useful after sunset | Breezes and rain showers |
| Rain | Showers are more likely than in summer | Your location, terrain, and passing weather systems |
| Ocean comfort | Water remains swimmable for many people | Your cold tolerance, wind, waves, and time in the water |
| Beach conditions | One shoreline may be suitable while another is not | Swell direction, currents, shorebreak, and official alerts |
The reliable December mindset is to pack for warmth and a little variability, not for nonstop sunshine or an islandwide washout.
Can you swim and snorkel in Maui in December?
Yes, many visitors swim and snorkel in Maui in December, and the Department of Land and Natural Resources describes winter and spring sea-surface temperatures around the main Hawaiian Islands at about 75°F (24°C). Water temperature alone is not a safety signal, however. Hawaii Ocean Safety explains that winter swells can create dangerous conditions on many north- and west-facing shores, while south shores are generally flat to small during the November-to-April winter pattern.
That pattern does not mean every South Maui beach is automatically calm. Wind, currents, shorebreak, visibility, runoff, and a wrapping swell can change the experience fast. Before entering, check the local forecast and surf report, read every posted warning, and ask a lifeguard about conditions when one is present. Hawaii Ocean Safety advises beachgoers to swim near a lifeguard, watch for warnings, stay with a buddy, and return to shore when weather worsens. Read the official ocean-safety guidance.
For a first-time snorkeler, the difference between a good day and a frustrating day is often not the monthly temperature. It is a low-stress entry, clear instructions, comfortable equipment, and conditions that match the person's confidence.
For example, a workable December ocean plan is to check the forecast before breakfast, choose a morning activity, look at the current beach hazard report, and keep an afternoon land activity in reserve. If the ocean is not suitable, changing the plan is good judgment, not a wasted vacation day.
For a live-condition checklist before any December snorkel, use our maui snorkel report. It explains what to check on the day, beyond monthly averages.
The useful rule is simple: December water can be inviting, but the beach must be assessed as it is today.
Does rain in December cancel outdoor plans?
No. A December shower does not automatically cancel a beach day, a drive, or a guided activity, because Maui rainfall is highly localized. It does mean you should avoid treating a sunny hotel window or a single islandwide forecast icon as proof that conditions are suitable everywhere.
December falls within Hawaii's wetter winter season, and conditions can differ dramatically across the island. National Weather Service reporting has documented December periods when leeward Maui was especially dry while wetter windward locations received much more rain. A 2023 NWS regional rainfall report is a useful illustration of this difference: it reported most leeward Maui gauges below 30% of average December rainfall while a windward gauge measured more than 23 inches that month.
Rain matters more for ocean plans when it brings lightning, poor visibility, strong winds, or runoff. Hawaii Ocean Safety advises people to leave the water during heavy rain and thunderstorms, and notes that runoff can lead to brown-water advisories. Its weather-hazards guidance is the right reference when a wet forecast affects an ocean day.
| December situation | Better response | Avoid |
|---|---|---|
| Brief local shower with no warnings | Recheck the exact beach forecast and visibility | Assuming all of Maui is rainy |
| Heavy rain or thunder | Leave the water and seek shelter | Waiting in the ocean for it to pass |
| Brown-water advisory or visibly dirty runoff | Choose a non-ocean plan | Snorkeling through murky nearshore water |
| High-surf or strong-current warning | Stay out of the water at that beach | Entering because the air is warm |
| Strong afternoon wind | Move ocean plans earlier or choose land sightseeing | Treating a morning forecast as permanent |
The main December rain lesson is to use a flexible itinerary, because local conditions matter more than the monthly label of “wet season.”
When should you schedule a weather-dependent ocean activity?
For many visitors, morning is the better window for snorkeling or kayaking because wind activity often increases later in the morning or afternoon. That is a planning advantage, not a guarantee of calm water. Hawaii Ocean Safety specifically notes that wind can make getting back to shore more difficult and recommends paying attention to forecast changes. See the state's guidance for ocean activities.
Book the activity you most care about early in the trip if your schedule allows. That creates room to move to another suitable day if conditions, health, or a warning make the original plan unsuitable. Then reserve sunset views, scenic drives, museums, food stops, or other land-based activities for the time of day when wind or showers may be less convenient for the ocean.
A practical booking example: schedule a guided morning snorkel or kayak experience for the first half of your stay, check current conditions again that morning, and keep a South Maui drive or beach walk as the backup. Do not select an ocean activity based only on a December average, a hotel location, or a photograph from a different day.
Visitors who want a sunset-oriented outing can consider our Golden Hour Turtle Town Experience, which combines a guided coastal kayak experience with a Turtle Town snorkel stop when conditions allow. As with every ocean activity, participation should follow the guide's safety direction and the day's conditions.
The best December schedule gives your priority ocean activity an early, flexible slot and protects the rest of the day with a backup plan.
What should you pack for Maui in December?
Pack for summer weather, brief rain, breezy evenings, and a range of activity levels. Most visitors will be comfortable with lightweight clothing during the day, but a thin long-sleeve layer is useful after sunset, during windy coastal stops, and in air-conditioned restaurants or vehicles.
For a beach or guided ocean day, bring:
- A swimsuit and a dry change of clothes.
- Reef-conscious sun protection, a hat, and sunglasses.
- A lightweight rain layer that can fit into a day bag.
- A light sweater or long-sleeve shirt for evenings.
- Secure footwear for rocky or uneven shoreline access.
- A refillable water bottle.
- Prescription medication and any motion- or cold-sensitivity items you normally use.
Do not pack as if December weather is the same across Maui. A beach towel and sandals may be all you need for one stop, while a scenic drive toward a higher or wetter area may call for closed shoes and a rain layer.
For the ocean, comfort improves when equipment fits properly and the plan matches your experience. Travelers who are new to snorkeling can also use our guide to hawaii snorkeling trips to compare what type of guided experience suits their confidence and goals.
The right December packing list is light, sun-ready, and prepared for wind or rain without turning your suitcase into winter luggage.
Is December a good time to go to Maui?
December is a good time to visit Maui if you want warm coastal temperatures, holiday energy, and the possibility of ocean activities while accepting that winter rain and surf variability require flexibility. It is not the month to assume every beach will be calm or that every day will follow the same plan.
The strongest December itineraries balance beach time with flexible land options. Start with a weather-sensitive activity, check conditions often, and stay open to moving from snorkeling to sightseeing if the ocean is not appropriate. Maui's variety is an advantage when you use it.
If you will be near a lifeguarded beach, Hawaii Ocean Safety lists Maui lifeguard locations including Kamaole 1, Kamaole 2, Kamaole 3, and Makena State Park on the Kihei and South Shore. Check the current schedule and conditions rather than assuming coverage at every beach or every hour. View Hawaii's lifeguarded-beach list.
December is a strong Maui month for travelers who plan for warmth, respect winter ocean conditions, and keep one backup option ready.
Frequently asked questions
Is December a good time to go to Maui?
December is a good time to go to Maui for warm coastal weather, holiday travel, and outdoor activities, provided you stay flexible about rain and ocean conditions. Kahului-area December temperatures are commonly warm, but winter swells and local showers can affect individual beaches. Check live warnings and forecasts before swimming, snorkeling, or kayaking.
What is the rainiest month in Maui?
There is no single answer that describes every part of Maui because rainfall varies sharply by coast and elevation. December is part of Maui's wetter winter season, but a location's exposure to wind and terrain matters more than the islandwide month label. Use a forecast for your exact destination, especially for Hana, Upcountry, or windward areas.
Which Hawaiian island is warmest in December?
No Hawaiian island is uniformly warmest in December because temperatures vary by elevation, coast, clouds, and wind. For a beach vacation, compare the forecast for the specific low-elevation leeward area where you plan to stay. On Maui, a warm coastal afternoon can coexist with much cooler or wetter conditions elsewhere on the island.
What is the weather like in Maui during Christmas?
Maui weather during Christmas is usually warm at lower elevations, with Kahului-area mid-December climate normals near 83°F (28°C) for daytime highs and 66°F (19°C) for nighttime lows. Christmas falls in the wetter winter season, so exact rain, wind, and surf conditions cannot be predicted from averages alone. Check the live forecast close to travel.
How should you turn a December forecast into a plan?
Use the forecast to choose a direction and a time of day, then use current beach information to decide whether to enter the water. A warm air temperature is encouraging, but it does not overrule high surf, strong-current warnings, brown water, poor visibility, or a guide's safety decision.
For the day you want to snorkel or kayak, follow this order:
- Check the forecast for the exact Maui area you will visit.
- Review surf, wind, rain, and beach hazard information that morning.
- Read posted signs and speak with a lifeguard or guide when available.
- Keep a land-based alternative ready if the water is not appropriate.
Maui in December rewards travelers who make decisions from the beach conditions in front of them, not from a monthly average on a screen.