Weather in Sými for December 2025
Until now, December 2025 in Sými has been nearly identical to the historical average, with a temperature of 16.5 °C (showing only a slight deviation of -0.3 °C).
Expect cooler weather in the next days in Sými with the forecast suggesting a temperature of 15.1 °C, lower than the historical average.
In general, the average temperature in Sými at the beginning of December is 17.1 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 13.4 °C by the end of December.
Sými experiences heavy rainfall in December, with over 20 rainy days and an average total precipitation 169.3 mm.
Is December a good time to visit Sými? check out the best time to travel to Sými page.
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Sými Weather December
Temperatures trend during December in Sými
December weather in Sými day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Dec. |  Patchy rain possible | 18° /16° | 4.8 mm | 4 | |
| 2 Dec. | Patchy rain possible | 18° /15° | 3.5 mm | 4 | |
| 3 Dec. | Patchy rain possible | 17° /14° | 3.4 mm | 4 | |
| 4 Dec. | Light rain shower | 17° /15° | 1.3 mm | 4 | |
| 5 Dec. |  Moderate rain at times | 18° /14° | 13.4 mm | 4 | |
| 6 Dec. | Light rain shower | 16° /13° | 19.6 mm | 4 | |
| 7 Dec. | Light rain shower | 16° /14° | 12 mm | 4 | |
| 8 Dec. | Light rain shower | 17° /13° | 8.6 mm | 4 | |
| 9 Dec. | Patchy rain possible | 16° /14° | 3.1 mm | 4 | |
| 10 Dec. | Patchy rain possible | 17° /14° | 1.1 mm | 4 | |
| 11 Dec. | Light rain shower | 16° /14° | 12.2 mm | 4 | |
| 12 Dec. | Light rain shower | 16° /14° | 3 mm | 4 | |
| 13 Dec. |  Sunny | 16° /14° | 0 mm | 5 | |
| 14 Dec. | Sunny | 17° /14° | 0.1 mm | 4 | |
| 15 Dec. | Sunny | 16° /14° | 0 mm | 0.4 | |
| 16 Dec. | Sunny | 15° /13° | 0 mm | 0.5 | |
| 17 Dec. | Sunny | 16° /14° | 0 mm | 0.5 | |
| 18 Dec. | Sunny | 16° /15° | 0 mm | 0.4 | |
| 19 Dec. | Sunny | 17° /15° | 0 mm | 0.6 | |
| 20 Dec. |  Partly cloudy | 17° /15° | 0 mm | 5 | |
| 21 Dec. | Partly cloudy | 16° /15° | 0 mm | 5 | |
| 22 Dec. |  Moderate rain | 16° /14° | 5.7 mm | 4 | |
| 23 Dec. | Moderate rain | 16° /15° | 6.9 mm | 4 | |
| 24 Dec. | Patchy rain possible | 16° /14° | 3.2 mm | 3 | |
| 25 Dec. | Sunny | 15° /13° | 0 mm | 4 | |
| 26 Dec. | Sunny | 13° /12° | 0 mm | 4 | |
| 27 Dec. | Sunny | 11° /9° | 0 mm | 4 | |
| 28 Dec. | Sunny | 12° /9° | 0 mm | 4 | |
| 29 Dec. | Sunny | 14° /11° | 3.3 mm | 4 | |
| 30 Dec. | Patchy rain possible | 14° /12° | 0.6 mm | 4 | |
| 31 Dec. | Patchy rain possible | 15° /13° | 0.9 mm | 4 | |
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Sými weather in December vs November vs January
| November | December | January | |
|---|---|---|---|
| Weather | Sunny | Patchy rain possible | Patchy rain possible |
| Temperatures | 19°/16° | 16°/14° | 15°/13° |
| Rainfall | 81 mm | 169 mm | 85 mm |
| Wind | 23.8 km/h | 23 km/h | 21.1 km/h |
| Humidity | 62% | 70% | 69% |
| Rainy days | 13 days | 21 days | 21 days |
| Dry days | 17 days | 10 days | 10 days |
Planning a trip to Sými? Discover the best time to visit
Sými in December - FAQ
What to pack to Sými in December?
As you prepare for your trip to Sými in December, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Sými, during December, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Warm Clothing: Sweaters, hoodies, long pants
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Accessories
- Scarves: To protect you from the cold wind
- Gloves/Mittens: Essential for cold weather
- Warm Hats: Warm hats for insulation in cold weather
- Umbrellas/Raincoats: For rainy days
December rainfall patterns in Sými
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Where is Sými?Get accurate weather forecasts for Sými, located at latitude 36.615 and longitude 27.836. Stay updated with localized weather information tailored for Sými.