Is It Cold In Hawaii In December is a question many travelers ask before booking flights, because Hawaii’s postcard beaches can hide real variety in climate. You’ll learn how temperatures actually feel, which islands and elevations are cooler, and practical packing and activity tips so you can enjoy your trip no matter the forecast.
Read also: Is It Cold In Hawaii In December
Short Answer: Does December Feel Cold in Hawaii?
No, Hawaii is not cold in December for most visitors; daytime highs typically sit around the mid-70s to low 80s °F (about 24–28°C) while nights cool into the mid-60s °F (around 18–20°C). That mild range means beach days remain comfortable for swimming, yet light layers can help in the evening. Overall, December feels warm compared with most mainland winter climates, but some spots do get cooler or wetter.
Read also: Is It Legal To Sleep In Your Car In Florida
Average Temperatures and What to Expect
First, understand the basic numbers so you know what to expect. In December, the islands move into their cooler and wetter season, but “cooler” still usually means pleasant warmth during the day.
Typical averages provide a clear snapshot:
| Location | Avg High (°F) | Avg Low (°F) |
|---|---|---|
| Honolulu (Oahu) | 79°F (26°C) | 67°F (19°C) |
| Kahului (Maui) | 79°F (26°C) | 66°F (19°C) |
| Hilo (Big Island) | 77°F (25°C) | 63°F (17°C) |
Moreover, these averages mean you should expect warm afternoons and cooler evenings. If you plan outdoor activities early or late in the day, pack a light jacket or sweater.
Read also: Is Mariguana Legal In Florida
Microclimates: Why Some Places Feel Colder
Next, remember Hawaii is famous for microclimates—tiny areas that can feel very different from nearby beaches. Mountains, trade winds, and rain showers create pockets of cool or wet weather.
Look at a few common microclimate examples:
- Leeward beaches (e.g., Waikiki at times) often stay sunny and warm.
- Windward sides (e.g., Hilo coast) receive more rain and feel cooler.
- High elevations on any island get noticeably colder.
So, when you choose where to stay, consider whether you want sun or lush green landscapes. Coastal resorts usually give more sun, while windward towns deliver lush scenery but more clouds and showers.
Rain, Wind, and Humidity: The “Feels Like” Temperature
Additionally, the real-feel temperature depends on rain and wind. December often brings more showers than summer, and trade winds can cool you down, especially in the mornings and evenings.
Consider these points:
- Rain increases humidity, which can make warm air feel stickier.
- Wind can make a 70°F afternoon feel several degrees cooler.
- Short, heavy showers often pass quickly, returning sun within an hour.
For reference, Honolulu averages a few inches of rain in December, while wind gusts offshore pick up during storm systems. This combination means you may need rain gear for daytime hikes, even if temperatures stay mild.
High Elevations and Snow on the Big Island
Meanwhile, if you plan to visit high elevations, bring warmer clothing. Mauna Kea and Mauna Loa on the Big Island often get freezing temperatures and occasional snow, even while the coast remains tropical.
Here is a small table showing how temperature drops with elevation:
| Elevation | Typical December Temp |
|---|---|
| Sea level | ~75–80°F (24–27°C) |
| 5,000 ft | ~45–55°F (7–13°C) |
| 13,000 ft (Mauna Kea summit) | Below freezing; snow possible |
Therefore, if you drive up to a summit for stargazing or sightseeing, plan layers and check road and weather advisories. Temperatures can change rapidly with elevation and time of day.
What to Pack for December in Hawaii
Now, packing wisely will help you enjoy both beach time and cooler moments. Aim for versatile clothing you can layer.
Suggested items include:
- Shorts, tees, and a swimsuit for daytime.
- A light sweater or windbreaker for evenings and boat rides.
- A compact rain jacket for brief showers.
- One warmer layer if you plan high-elevation trips.
Also pack sun protection: SPF sunscreen, a hat, and sunglasses. Even in December, sun exposure on sunny days can be strong, and UV levels remain high in the tropics.
Activities and Best Times of Day
Finally, think about how weather affects plans. Most outdoor activities work well in December, but timing matters for comfort and safety.
For planning, consider this ordered list:
- Morning: Great for hikes—cooler temps and calmer winds.
- Midday: Best for beach and water sports when it’s warmest.
- Afternoon: Watch for passing showers, especially on windward coasts.
- Evening: Bring a light layer for restaurant patios or sunset viewing.
In addition, ocean conditions can change: winter swells bring big waves to north shores (excellent for surf watching but not always safe for casual swimming). So, check local surf and beach safety updates before you head out.
In summary, December in Hawaii leans warm rather than cold for most visitors, but microclimates, trade winds, and high elevations introduce variety. Pack layers, expect occasional rain, and choose activities based on local conditions; then you’ll enjoy the islands any time you visit. Ready to plan your trip? Book smart, pack light layers, and enjoy island time.