Island Overview
June 13 delivers a divided island. The north coast, from Chania through Heraklion to Hersonissos and Malia, is seeing light rain showers with temperatures of 24 to 25°C and up to 1.4 mm of precipitation at Rethymno. Across the mountain spine, the south and east coasts are dry. Ierapetra and Makrigialos sit under mainly clear skies with highs of 27°C, while Ag. Nikolaos, Elounda, and Sitia are overcast but rain-free. The Lefka Ori and Psiloritis are acting as the dividing line, keeping moisture on the northern slopes while the south deals with a different challenge: wind.
North vs South
The contrast is sharp. Rethymno has the cloudiest conditions on the island today, with a UV index of just 5.05 and the highest precipitation at 1.4 mm. Chania and Heraklion are similar but lighter, recording 0.3 to 0.4 mm, with winds of 16 to 22 km/h and wave heights under 1 m. South of the mountains, Ierapetra reaches 26.6°C under clear skies and Makrigialos 26.9°C. However, the south coast is not calm. Gusts of 36.8 km/h at Ierapetra and 33.7 km/h at Makrigialos make open, exposed beaches uncomfortable. The east coast is windier still: Ag. Nikolaos and Elounda record 30 km/h gusts, and Sitia reaches 27.2 km/h.
Mountains and Gorges
North-facing approaches to major gorges and high-altitude routes are wet today. Paths in Samaria and Imbros will be damp with slippery rock sections likely. Hikers should carry a waterproof layer, wear grip footwear, and check local access conditions before setting out. Avoid exposed ridgeline walks on the northern slopes this morning.
Sea, Wind, and UV
Sea temperatures are uniformly warm for June, ranging from 23.6°C at Sitia to 24.6°C at Rethymno and Hersonissos. Wave heights are modest in most areas: 0.6 m at Makrigialos, 0.82 m at Rethymno, 0.96 m at Heraklion, with Sitia the highest at 1.2 m. UV is very high island-wide, from 7.3 at Sitia to 8.25 at Ag. Nikolaos. This includes the overcast north coast, where several cities still record UV of 8.05 to 8.15 despite cloud cover. Sunscreen is not optional today.
Swim Verdict
Swimming is safe and water temperature is excellent everywhere. The best conditions are at sheltered south coast coves near Makrigialos and Ierapetra, where skies are clear and waves stay below 0.65 m. Avoid open beaches facing into the wind in those areas. North coast beaches at Chania and Rethymno offer calm seas with modest wave heights and lighter winds, with the trade-off of occasional brief showers. The east coast (Sitia, Ag. Nikolaos) combines overcast skies, strong gusts, and waves up to 1.2 m: manageable for confident swimmers but not the most comfortable. Overall: go south for sun, go north for calm water.
Practical Tip
A UV index of 8 is classified as very high and causes sunburn in under 20 minutes on unprotected skin. Cloud cover on the north coast filters very little of this. Apply SPF 30 or higher before leaving your accommodation, seek shade between 11:00 and 15:00, and reapply sunscreen immediately after drying off. A wide-brim hat is useful on both coasts today, on the north coast for rain and on the south for intense midday sun.
