Kos · April
Low seasonGreece · Europe
Climate Overview
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Ø day, range from coolest to warmest dayØ dayrange | 15° (59°)7– (45–)18 (64) | 15° (59°)8– (46–)18 (64) | 17° (63°)12– (54–)21 (70) | 20° (68°)15– (59–)26 (79) | 25° (77°)19– (66–)30 (86) | 29° (84°)24– (75–)34 (93) | 32° (90°)28– (82–)36 (97) | 32° (90°)28– (82–)36 (97) | 29° (84°)24– (75–)34 (93) | 24° (75°)18– (64–)28 (82) | 20° (68°)14– (57–)25 (77) | 16° (61°)9– (48–)21 (70) |
Ø night, range from coldest to warmest nightØ nightrange | 9° (48°)1– (34–)15 (59) | 10° (50°)2– (36–)14 (57) | 11° (52°)2– (36–)15 (59) | 14° (57°)8– (46–)17 (63) | 17° (63°)12– (54–)20 (68) | 21° (70°)17– (63–)25 (77) | 23° (73°)20– (68–)26 (79) | 24° (75°)20– (68–)26 (79) | 21° (70°)16– (61–)24 (75) | 18° (64°)12– (54–)21 (70) | 14° (57°)6– (43–)19 (66) | 11° (52°)3– (37–)16 (61) |
☀️Sunshine | 6h UV 5 | 8h UV 6 | 9h UV 7 | 11h UV 9 | 12h UV 9 | 13h UV 10 | 13h UV 10 | 12h UV 9 | 11h UV 8 | 9h UV 6 | 7h UV 5 | 6h UV 4 |
🌊Water Temp | 18° (64°) | 17° (63°) | 17° (63°) | 18° (64°) | 20° (68°) | 23° (73°) | 24° (75°) | 26° (79°) | 25° (77°) | 24° (75°) | 22° (72°) | 20° (68°) |
🌧Rain Days | 9d89mm (3.5") | 5d68mm (2.7") | 5d61mm (2.4") | 1d7mm (0.3") | 2d23mm (0.9") | 0d2mm (0.1") | 0d0mm (0") | 0d0mm (<0.1") | 1d12mm (0.5") | 2d22mm (0.9") | 4d45mm (1.8") | 8d85mm (3.3") |
Best travel time current monthØ = average · small figures = range: coolest–warmest day / coldest–warmest nightClimate data 2005–2025 · Source: ERA5 + station data
Still off-season — flights and hotels significantly cheaper than in May.
April in Kos at 20°C (68°F) is too cool for a beach holiday, but suitable for sightseeing and hiking. The best travel months are May, June, July, August, September, and October.
Daytime highs average 20°C (68°F), cooling to 14°C (57°F) at night (daily average: 17°C (63°F)). Peaks reach around 26°C (79°F), the coldest nights around 8°C (46°F). With 11 sunshine hours per day, April is one of the sunniest months — 7 mm (0.3 in) of rain over 1 day. The sea is 18°C (64°F) — refreshing and manageable for confident swimmers.
A jacket for cool evenings should not be left behind. Sightseeing and excursions can be enjoyed comfortably at this time of year.
The island is greener than ever and scattered with poppies. Kos is flat, which makes it the cycling island of the Aegean — in spring you ride the coast roads without heat and without traffic. First swimmers; the water is still 17 to 20°C (63 to 68°F).
Packing list for Kos in April
- Long-sleeved shirts and light trousers
- Light jacket
- SPF 50 sunscreen
- Sunglasses
- Sun hat
- Travel first-aid kit
Frequently Asked Questions
- Is April a good time to visit Kos?
- April is not an optimal month for Kos (Score: 79/100), but it is manageable. For better conditions, consider May, June, July, August, September, and October.
- How warm is it in Kos in April?
- In April, Kos sees daily highs of 20°C (68°F). Nights cool to 14°C (57°F), with a daily average of 17°C (63°F). Peaks reach around 26°C (79°F), the coldest nights around 8°C (46°F).
- How much rain falls in Kos in April?
- In April, Kos receives an average of 7 mm (0.3 in) of rain over 1 rain day. That is comparatively dry.
- How many sunshine hours does Kos get in April?
- Kos averages 11 sunshine hours per day in April — above the annual average.
- How warm is the water in Kos in April?
- Water temperature in Kos in April averages 18°C (64°F) — refreshing but slightly cool for sensitive swimmers.
