May history in Heraklion

Greece · Compare three complete years with the current year to date.

Month

Year

Mean air temperature

20°C

Mean daytime air temperature

22°C

Mean nighttime air temperature

18°C

Maximum air temperature

32°C

Minimum air temperature

9°C

Total precipitation

35.6 mm

Sunny days

Mean sea temperature

19.7°C

Minimum sea temperature

17.8°C

Maximum sea temperature

23.3°C

Maximum wind speed

31.8 km/h

Air temperature (°C)

Daily minimum, mean and maximum

Date	Mean (°C)	Maximum (°C)	Minimum (°C)
2026-05-01	16	19	14
2026-05-02	13	15	11
2026-05-03	12	14	9
2026-05-04	13	16	11
2026-05-05	16	21	13
2026-05-06	17	23	12
2026-05-07	20	26	14
2026-05-08	21	25	17
2026-05-09	23	31	16
2026-05-10	21	24	16
2026-05-11	25	32	19
2026-05-12	23	29	17
2026-05-13	23	27	19
2026-05-14	21	25	17
2026-05-15	20	24	16
2026-05-16	23	29	17
2026-05-17	22	26	19
2026-05-18	20	24	17
2026-05-19	19	22	16
2026-05-20	19	21	16
2026-05-21	21	25	18
2026-05-22	20	24	17
2026-05-23	18	21	15
2026-05-24	19	22	17
2026-05-25	21	23	18
2026-05-26	21	25	19
2026-05-27	22	25	18
2026-05-28	22	26	17
2026-05-29	23	28	19
2026-05-30	23	26	19
2026-05-31	23	28	18

Sea temperature (°C)

Daily sea-surface mean

Date	Sea temperature (°C)
2026-05-01	18.6
2026-05-02	18.3
2026-05-03	18.1
2026-05-04	17.9
2026-05-05	18.0
2026-05-06	18.5
2026-05-07	18.6
2026-05-08	18.7
2026-05-09	19.0
2026-05-10	19.2
2026-05-11	19.4
2026-05-12	19.5
2026-05-13	20.0
2026-05-14	19.8
2026-05-15	19.4
2026-05-16	19.7
2026-05-17	19.6
2026-05-18	19.7
2026-05-19	19.8
2026-05-20	19.2
2026-05-21	19.4
2026-05-22	19.7
2026-05-23	19.9
2026-05-24	20.0
2026-05-25	20.2
2026-05-26	20.4
2026-05-27	20.8
2026-05-28	21.5
2026-05-29	22.0
2026-05-30	22.5
2026-05-31	22.7

Wave height (m)

Daily mean wave height

Date	Wave height (m)
2026-05-01	0.6
2026-05-02	1.5
2026-05-03	2.0
2026-05-04	1.7
2026-05-05	0.6
2026-05-06	0.2
2026-05-07	0.1
2026-05-08	0.1
2026-05-09	0.1
2026-05-10	0.2
2026-05-11	0.2
2026-05-12	0.3
2026-05-13	0.6
2026-05-14	0.7
2026-05-15	0.8
2026-05-16	0.3
2026-05-17	0.5
2026-05-18	0.6
2026-05-19	0.4
2026-05-20	1.0
2026-05-21	0.5
2026-05-22	0.3
2026-05-23	0.4
2026-05-24	0.5
2026-05-25	0.7
2026-05-26	0.7
2026-05-27	0.4
2026-05-28	0.2
2026-05-29	0.1
2026-05-30	0.4
2026-05-31	0.3

Precipitation (mm)

Daily precipitation total

Date	Precipitation (mm)
2026-05-01	3.0
2026-05-02	3.3
2026-05-03	8.8
2026-05-04	1.6
2026-05-05	0.0
2026-05-06	0.0
2026-05-07	0.0
2026-05-08	0.0
2026-05-09	0.0
2026-05-10	0.0
2026-05-11	0.0
2026-05-12	0.0
2026-05-13	0.3
2026-05-14	0.0
2026-05-15	0.0
2026-05-16	0.0
2026-05-17	0.0
2026-05-18	0.0
2026-05-19	0.4
2026-05-20	4.4
2026-05-21	0.0
2026-05-22	0.8
2026-05-23	11.2
2026-05-24	1.2
2026-05-25	0.0
2026-05-26	0.0
2026-05-27	0.6
2026-05-28	0.0
2026-05-29	0.0
2026-05-30	0.0
2026-05-31	0.0

Sunshine duration (h)

WMO-defined direct sunshine hours

Date	Sunshine (h)
2026-05-01	8.1
2026-05-02	8.6
2026-05-03	11.2
2026-05-04	13.0
2026-05-05	13.0
2026-05-06	13.0
2026-05-07	11.0
2026-05-08	5.1
2026-05-09	13.0
2026-05-10	13.0
2026-05-11	12.7
2026-05-12	13.0
2026-05-13	8.4
2026-05-14	13.2
2026-05-15	12.3
2026-05-16	13.0
2026-05-17	12.2
2026-05-18	12.1
2026-05-19	10.2
2026-05-20	13.2
2026-05-21	13.4
2026-05-22	13.3
2026-05-23	11.6
2026-05-24	13.1
2026-05-25	13.4
2026-05-26	13.5
2026-05-27	13.5
2026-05-28	13.6
2026-05-29	13.6
2026-05-30	13.5
2026-05-31	13.8

Humidity (%)

Daily mean relative humidity

Date	Humidity (%)
2026-05-01	75.0
2026-05-02	70.0
2026-05-03	66.0
2026-05-04	63.0
2026-05-05	54.0
2026-05-06	57.0
2026-05-07	59.0
2026-05-08	44.0
2026-05-09	42.0
2026-05-10	63.0
2026-05-11	45.0
2026-05-12	50.0
2026-05-13	52.0
2026-05-14	55.0
2026-05-15	54.0
2026-05-16	50.0
2026-05-17	48.0
2026-05-18	52.0
2026-05-19	61.0
2026-05-20	62.0
2026-05-21	52.0
2026-05-22	57.0
2026-05-23	76.0
2026-05-24	76.0
2026-05-25	70.0
2026-05-26	59.0
2026-05-27	57.0
2026-05-28	66.0
2026-05-29	54.0
2026-05-30	46.0
2026-05-31	40.0

Wind (km/h)

Daily maximum wind speed

Date	Maximum wind (km/h)
2026-05-01	16.8
2026-05-02	23.7
2026-05-03	31.8
2026-05-04	28.7
2026-05-05	20.2
2026-05-06	9.5
2026-05-07	9.5
2026-05-08	24.7
2026-05-09	23.2
2026-05-10	14.2
2026-05-11	27.4
2026-05-12	15.4
2026-05-13	13.9
2026-05-14	26.5
2026-05-15	23.9
2026-05-16	14.5
2026-05-17	30.4
2026-05-18	12.1
2026-05-19	21.0
2026-05-20	29.2
2026-05-21	20.6
2026-05-22	14.9
2026-05-23	17.2
2026-05-24	22.1
2026-05-25	20.2
2026-05-26	18.7
2026-05-27	14.8
2026-05-28	14.5
2026-05-29	18.1
2026-05-30	13.1
2026-05-31	14.1

Daily weather values

Source values for May 2026; unavailable readings are shown as gaps.

Date	Conditions	Min / max (°C)	Sea (°C)	Waves (m)	Rain (mm)	Sun (h)	Humidity (%)	Wind (km/h)
2026-05-01	Drizzle	14 / 19	18.6	0.6	3.0	8.1	75.0	16.8
2026-05-02	Drizzle	11 / 15	18.3	1.5	3.3	8.6	70.0	23.7
2026-05-03	Rain	9 / 14	18.1	2.0	8.8	11.2	66.0	31.8
2026-05-04	Drizzle	11 / 16	17.9	1.7	1.6	13.0	63.0	28.7
2026-05-05	Mostly clear	13 / 21	18.0	0.6	0.0	13.0	54.0	20.2
2026-05-06	Clear sky	12 / 23	18.5	0.2	0.0	13.0	57.0	9.5
2026-05-07	Overcast	14 / 26	18.6	0.1	0.0	11.0	59.0	9.5
2026-05-08	Overcast	17 / 25	18.7	0.1	0.0	5.1	44.0	24.7
2026-05-09	Overcast	16 / 31	19.0	0.1	0.0	13.0	42.0	23.2
2026-05-10	Overcast	16 / 24	19.2	0.2	0.0	13.0	63.0	14.2
2026-05-11	Overcast	19 / 32	19.4	0.2	0.0	12.7	45.0	27.4
2026-05-12	Overcast	17 / 29	19.5	0.3	0.0	13.0	50.0	15.4
2026-05-13	Drizzle	19 / 27	20.0	0.6	0.3	8.4	52.0	13.9
2026-05-14	Overcast	17 / 25	19.8	0.7	0.0	13.2	55.0	26.5
2026-05-15	Overcast	16 / 24	19.4	0.8	0.0	12.3	54.0	23.9
2026-05-16	Overcast	17 / 29	19.7	0.3	0.0	13.0	50.0	14.5
2026-05-17	Overcast	19 / 26	19.6	0.5	0.0	12.2	48.0	30.4
2026-05-18	Overcast	17 / 24	19.7	0.6	0.0	12.1	52.0	12.1
2026-05-19	Drizzle	16 / 22	19.8	0.4	0.4	10.2	61.0	21.0
2026-05-20	Drizzle	16 / 21	19.2	1.0	4.4	13.2	62.0	29.2
2026-05-21	Mostly clear	18 / 25	19.4	0.5	0.0	13.4	52.0	20.6
2026-05-22	Drizzle	17 / 24	19.7	0.3	0.8	13.3	57.0	14.9
2026-05-23	Rain	15 / 21	19.9	0.4	11.2	11.6	76.0	17.2
2026-05-24	Drizzle	17 / 22	20.0	0.5	1.2	13.1	76.0	22.1
2026-05-25	Clear sky	18 / 23	20.2	0.7	0.0	13.4	70.0	20.2
2026-05-26	Clear sky	19 / 25	20.4	0.7	0.0	13.5	59.0	18.7
2026-05-27	Drizzle	18 / 25	20.8	0.4	0.6	13.5	57.0	14.8
2026-05-28	Clear sky	17 / 26	21.5	0.2	0.0	13.6	66.0	14.5
2026-05-29	Mostly clear	19 / 28	22.0	0.1	0.0	13.6	54.0	18.1
2026-05-30	Overcast	19 / 26	22.5	0.4	0.0	13.5	46.0	13.1
2026-05-31	Clear sky	18 / 28	22.7	0.3	0.0	13.8	40.0	14.1