Greece

Kos in January: weather, sea & travel advice

This month's data profile

Rain shapes the decision

Kos in January is climatically mixed. The average daily high is around 14 °C, and the sea is about 18 °C. With about 12 rainy days it is wet.

Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.

Rank among 12 monthly averages

43/100 · #12

Warmth

#12

Dryness

#11

Sun

#11

Sea warmth

Published best categories: none

Kos · JanuaryPhoto: Stimoroll · CC BY-SA 4.0

Average high: 14 °C
Average low: 11 °C
Sea: 18 °C
Rainy days (est.): 12 rainy days (est.)
Sun (est.): 3 h/day
Humidity: 74 %

Climate evidence with direct month comparison

The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.

Climate averages for Kos: selected and adjacent months
Month	Avg high °C	Avg low °C	Rainy days (est.)	Precipitation mm	Sun h/day (est.)	Humidity %	Wind m/s	Sea °C	Score
December	16	12	13	147	2.6	74	4.5	19	49
January (selected)	14	11	12	133	2.9	74	4.6	18	43
February	15	10	10	99	4.0	74	4.7	17	48

How do the previous and next months compare?

Baseline: January (43/100)

Positive and negative values show the change from the selected month.

	Score Δ	Average high Δ	Average low Δ	Rainy days Δ	Rain Δ	Sun Δ	Humidity Δ	Wind Δ	Sea Δ
December	+6	+1.6 °C	+1.7 °C	+0.2	+13.3 mm	-0.3 h	-0.2 %	-0.1 m/s	+1.4 °C
February	+5	+0.2 °C	-0.2 °C	-2.1	-33.9 mm	+1.1 h	-0.3 %	+0.1 m/s	-0.8 °C

All twelve months in context

JanUnsuitable43 FebLimited48 MarLimited60 AprGood72 MayExcellent86 JunExcellent87 JulGood79 AugGood79 SepExcellent90 OctExcellent91 NovGood73 DecLimited49

Rainy days (estimated)

Sunshine hours (estimated)h/day

Average daily high°C

Sea temperature°C

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Where to stay in Kos

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Useful next decisions

Kos · Month by month

Bodrum · January Alanya · January Rhodes · January Samos · January

Frequently asked questions

How warm is Kos in January?

The average daily high is around 14 °C, with an average daily low of about 11 °C.

Can you swim in Kos in January?

The sea is about 18 °C (cold).

Does it rain a lot in Kos in January?

The curated estimate is about 12 rainy days per month, not a directly measured long-term average. Total precipitation averages around 133 mm for the month. A rainy day does not mean all-day rain.

When is the best time to visit Kos?

By the climate score, May, June, September and October are the strongest months for Kos. For a beach trip: June, July, August and September. January is not among them.