Climate Chart of Heraklion, Greece

Monthly data: Temperature °C, Rain (mm), Sunshine (h) · 2013–2023

For Heraklion, Greece, the climate data cover 2013–2023 and show a wide range in monthly mean temperatures, from 11.6 °C in January to 26.6 °C in August. The overall picture is of pronounced differences between the coolest and warmest monthly averages, alongside marked variation in daily sunshine and rainfall. These figures describe averages rather than the conditions on any particular day, so visitors should use them as context for planning rather than as a forecast.

Climate overview

Temperature

Monthly mean temperatures reach their lowest point at 11.6 °C in January, while the highest monthly mean is 26.6 °C in August. These are averages for each month, not daytime maximum temperatures, and do not show how much temperatures may vary from day to day. The unweighted mean across the calendar-month means is 18.8 °C; it is a broad summary, not a day-weighted annual average.

Rain

Mean daily rainfall is lowest in July, at 0.14 mm/day, making it a conditional option for visitors whose priority is lower average rainfall. The highest monthly mean is 2.84 mm/day in February, a useful cue to prepare for rain when planning around that period. These daily averages are not monthly totals and do not indicate how often rain falls or guarantee dry or wet days. The unweighted mean across monthly values is 1.34 mm/day.

Sunshine

Daily sunshine averages are highest at 13.07 hours/day in June and lowest at 7.59 hours/day in December. These figures can help with outdoor sightseeing plans that depend on sunshine, but they measure average sunshine duration rather than day length and cannot promise the conditions on a particular day. The unweighted mean across calendar-month averages is 10.42 hours/day.

Snow

The highest monthly mean for daily snowfall is 0.55 mm/day in February, while the unweighted mean across monthly values is 0.09 mm/day. These are mean daily amounts, not monthly totals; they do not establish how many snowy days occur, snow depth, snow cover or whether conditions are suitable for skiing.

Best Travel Time Guide for Heraklion, Greece: Ideal Seasons and Weather Insights

For visitors prioritising cooler monthly averages, January is the relevant reference point, with a mean temperature of 11.6 °C; this does not describe daytime highs or guarantee a particular feel on an individual day. Those more focused on lower average rainfall could consider July, when mean daily rainfall is 0.14 mm/day, while keeping in mind that the figure does not quantify rain frequency or ensure rain-free travel. If travelling in February, when mean daily rainfall reaches 2.84 mm/day, include rain-ready clothing in your plans rather than treating the average as a forecast. For outdoor scheduling, average daily sunshine is highest in June at 13.07 hours/day and lowest in December at 7.59 hours/day; sunshine duration is not day length, and neither average guarantees the weather on your visit. These criteria point to different planning priorities, not one universal best time to visit.

Climate Data Overview for Heraklion, Greece

Explore the comprehensive climate data for Heraklion, Greece. This detailed table provides valuable insights into temperature variations, precipitation levels, and seasonal changes, helping you understand the unique weather patterns of this region.

Month	Average: Temperature °C	Rain (mm) / day	Snow (mm) / day	Sunshine (h) / day
Jan	11.6	2.15	0.39	7.87
Feb	12.2	2.84	0.55	8.59
Mar	13.3	2.19	0.09	9.85
Apr	16.4	1.15	0.00	11.03
May	20.3	0.84	0.00	12.06
Jun	24.0	0.53	0.00	13.07
Jul	26.4	0.14	0.00	13.05
Aug	26.6	0.26	0.00	12.52
Sep	24.1	0.69	0.00	11.22
Oct	20.0	1.11	0.00	9.59
Nov	17.0	1.76	0.00	8.58
Dec	13.2	2.37	0.01	7.59
Average	18.8	1.34	0.09	10.42