Climate Chart of Thessaloniki, Greece

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

For Thessaloniki, Greece, the climate data describe 2013–2023. Monthly mean temperatures span from the coolest month, January at 5.5 °C, to the warmest, August at 26.9 °C. Mean daily rainfall is highest in November at 2.59 mm/day and lowest in August at 0.70 mm/day. Sunshine and snowfall add further seasonal contrasts, while these monthly averages describe typical conditions rather than what every day will bring.

Climate overview

Temperature

The monthly mean temperature reaches its high point in August at 26.9 °C, while the lowest monthly mean is in January at 5.5 °C. These figures describe average temperatures for the months, not daytime highs, so they do not show the full range visitors may encounter within a day. Across the calendar-month means, the unweighted mean is 16.2 °C; it is not a day-weighted annual average.

Rain

Mean daily rainfall is greatest in November at 2.59 mm/day, and least in August at 0.70 mm/day. The contrast can help with broad trip planning, but a lower monthly mean does not guarantee rain-free days or indicate how often rain falls. The unweighted mean across calendar-month means is 1.72 mm/day; these are daily averages, not monthly rainfall totals.

Sunshine

Mean daily sunshine duration is highest in July at 13.00 hours/day and lowest in December at 6.19 hours/day. This is a useful guide to average sunshine for outdoor plans, but sunshine duration is not the same as day length and does not guarantee clear skies on a particular day. The unweighted mean across calendar-month means is 9.51 hours/day.

Snow

Mean daily snowfall reaches its monthly high in January at 1.37 mm/day. The unweighted mean across calendar-month means is 0.23 mm/day. These snowfall averages do not establish how many days have snow, how deep it becomes, whether snow cover persists, or whether conditions are suitable for skiing.

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

For visitors prioritising lower average rainfall, August is the conditional option, with mean daily rainfall of 0.70 mm/day. That average cannot promise dry days or indicate rain frequency, so it is sensible to keep plans flexible rather than treat the month as reliably rain-free. Prepare for the month's highest mean daily rainfall in November, at 2.59 mm/day; a rain layer can be useful, although the average does not predict conditions on any particular date. Visitors who prioritise cooler monthly mean temperatures may consider January, when the mean is 5.5 °C, rather than taking that figure as a daytime high. For daylight outdoor planning, mean daily sunshine is greatest in July at 13.00 hours/day, while its lowest monthly mean is in December at 6.19 hours/day. These sunshine-duration averages can inform expectations but are not measures of day length or guarantees of clear weather; the rainfall, temperature and sunshine criteria point to different considerations, not one universal best time to visit.

Climate Data Overview for Thessaloniki, Greece

Explore the comprehensive climate data for Thessaloniki, 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	5.5	1.78	1.37	6.57
Feb	7.9	1.73	0.96	7.24
Mar	10.2	2.46	0.16	8.39
Apr	14.2	1.56	0.12	10.50
May	19.5	1.69	0.00	11.84
Jun	24.1	1.68	0.00	12.78
Jul	26.8	0.82	0.00	13.00
Aug	26.9	0.70	0.00	12.52
Sep	22.3	1.74	0.00	10.33
Oct	16.8	1.85	0.00	8.22
Nov	12.4	2.59	0.04	6.57
Dec	7.2	2.06	0.12	6.19
Average	16.2	1.72	0.23	9.51