General Conditions
The Mediterranean enjoys an average of 315 cloudless days each year. During the popular season of April through October, blue skies and warm weather prevail. Midsummer offers long evenings, glorious sunsets, gentle winds and still seas. The water temperature is about 62°F (17°C) in low season and about 78°F (26°C) in high season.

There are two dominant winds in Greece:

  1. The Meltemi: Varying from 15 to 40 knots. It begins in May and reaches its peak in July, then slows down in September. In the north Aegean, it blows northeast, turning to the north and becoming stronger in the centre of the Aegean Sea. More to the south it continues by veering to the west while weakening.
  2. The Sirocco: Southeast More frequent in winter, it corresponds to the passage of a depression. It can occasionally blow in April or the end of October.



Historical Weather (Averages by month):


Month

°F Max

°F Min

°C Max

°C Min

Ave Precip (in)

Ave Precip (mm)

Ave Water Temp (°F)

Ave Water Temp (°C)

Ave Wind Speed

January

55

39

13

4

6.4

163

59

15

7

February

55

41

13

5

5.9

149

57

14

7

March

61

43

16

6

4.3

108

57

14

8

April

66

48

19

9

2.9

74

59

15

7

May

73

54

23

12

1.9

47

64

18

7

June

82

61

28

16

0.7

19

72

22

7

July

88

64

31

18

0.4

11

75

24

7

August

88

64

31

18

0.9

22

77

25

7

September

81

61

27

16

2.9

74

75

24

7

October

72

55

22

13

5.8

147

72

22

6

November

64

48

18

9

8.1

206

66

19

8

December

57

43

14

6

8.1

207

61

16

8

Tides
In the eastern Mediterranean, the tide range is very small: 30 cm to 60 cm (one to two feet) including the variation of level due to atmospheric pressure and dominant winds.

Weather Forecast
When you arrive at the base, we will provide you with a weather forecast for the next 24 hours.  The weather forecast during your cruise can be seen on all television channels; Tavernas and Restaurants show weather programs just after the news at 8.50 pm.
Wind direction and speed is clearly indicated on a map.
Harbour Offices receive a weather forecast regularly. A weather forecast is also available on the web at http://www.poseidon.hmcr.gr On your radio receiver, on the Greek national station, forecasts are broadcast in Greek and English.
Time Station Frequency Radio wave:
6.30 am Athens 729 kHz 412 m
1.10 pm Corfu 1008 kHz 298 m
1.30 pm Rhodes 1494 kHz 200 m
12.00 pm Patras 1485 kHz 202 m
The Italian station, Radio One announces forecasts for the Ionian Sea at approximately 7.40 am and 11.45 pm on 567, 657, 666, 675, 1032, and 1332 kHz frequencies.
East of the Greek archipelago the forecast is in German at approximately 9.45 am and 2.00 pm on short wave on 6150 MHz/49 m frequency. On your VHF: It is possible to call HELLAS RADIO on channel 16 in English. You will be given the weather forecast for your zone, after you give them your VHF code signal and the name of your boat.

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