Umag weather

Our guide to the weather in Umag during December

10

Average high

3

UV Index

134mm

Monthly rainfall

13

Sea temperature

Umag is a picturesque coastal town in Croatia, offering a variety of activities and attractions for visitors throughout the year. December can be a mild and pleasant time to visit, but it's best to be prepared for some rain. We've looked at the most up-to-date weather data for Umag, covering the last 12 years up to 2024, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about Umag weather in December.

What's the temperature like in Umag during December?

The temperature is extremely stable in December with average highs of 10℃ and lows just 2℃ lower at 8℃. The UV index will be moderate at this time of year, so not something to worry about for the average person. However, if you're going to be outside for long periods it's worth wearing a broad spectrum SPF 30+ sunscreen and UV-blocking sunglasses. Remember that bright surfaces, such as water and sand increase UV exposure.

Does it rain in Umag during December?

On average, there will be 6 rainy days during the month, amounting to 133.9mm in total. That's a significant amount of rain. For comparison, the wettest months in the UK typically sees between 80mm and 100mm, depending on where you are. There's a small chance that you'll catch a thunderstorm during your trip.

Is it windy in Umag during December?

You're unlikely to experience any strong winds. Expect a light breeze that picks up slightly at times in December. With cool air temperatures, any breeze will feel cold.

Is it too cold to swim in the sea in Umag during December?

The water around Umag is a bracing 13℃ during December and would be considered too cold for swimming. Those who are a bit more hardy or frequently swim in cooler open water might want to take a quick dip. A wetsuit would be advisable if you wish to spend longer than 5 minutes in the water.

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Weather in Umag

Our month-by-month guide to the weather and climate in Umag

8.3

Umag weather in

January
9.1

Umag weather in

February
11.7

Umag weather in

March
15.2

Umag weather in

April
19.0

Umag weather in

May
23.8

Umag weather in

June
26.5

Umag weather in

July
26.9

Umag weather in

August
22.8

Umag weather in

September
18.1

Umag weather in

October
13.9

Umag weather in

November
9.9

Umag weather in

December