Kos · August
Best travel monthPeak 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
Peak season — flights and hotels at their annual highest. Book early.
August is one of the best months to visit Kos — with 12 sunshine hours per day and pleasant highs of 32°C (90°F).
Daytime highs average 32°C (90°F), cooling to 24°C (75°F) at night (daily average: 27°C (81°F)). Peaks reach around 36°C (97°F), the coldest nights around 20°C (68°F). With 12 sunshine hours per day, August is one of the sunniest months — 0 mm (0 in) of rain over 0 days. The water is a warm 26°C (79°F) — perfect for snorkelling and swimming.
Pack light summer clothing, sunscreen, and swimwear — beach and water conditions in August are ideal.
High season with the Meltemi. The north wind makes 31°C (88°F) bearable and turns Kefalos in the west into a kite spot, while the sheltered southern bays stay calm. Practically zero rain days from June to September.
Events & Festivals
- Honey Harvest Festival (Antimachia)first Saturday after the Assumption (15 August)
In the mountain village of Antimachia everything revolves around the island's famous thyme honey: local beekeepers present their products, honey specialities are handed out and traditional music accompanies the festivities.
Packing list for Kos in August
- Light summer clothes
- Swimwear and beach towel
- SPF 50 sunscreen
- Sunglasses
- Sun hat
- Travel first-aid kit
Frequently Asked Questions
- Is August a good time to visit Kos?
- Yes — August is one of the best months to visit Kos (Climate Score: 95/100). Pleasant temperatures (32°C (90°F)), good sunshine (12 h/day), and few rain days (0) make it one of the most recommended months.
- How warm is it in Kos in August?
- In August, Kos sees daily highs of 32°C (90°F). Nights cool to 24°C (75°F), with a daily average of 27°C (81°F). Peaks reach around 36°C (97°F), the coldest nights around 20°C (68°F).
- How much rain falls in Kos in August?
- In August, Kos receives an average of 0 mm (0 in) of rain over 0 rain days. That is comparatively dry.
- How many sunshine hours does Kos get in August?
- Kos averages 12 sunshine hours per day in August — above the annual average.
- How warm is the water in Kos in August?
- Water temperature in Kos in August averages 26°C (79°F) — ideal for swimming and snorkelling.
