Athens records about 402mm of rain across roughly 72 wet days a year, which is a 20% chance on an average day. December is the wettest month at 64mm (16% of the annual total) and July the driest at 6mm. Local rain type: brief showers. Almost never needed from May through September — Athens summers are bone-dry. Pack an umbrella only for winter visits when Mediterranean storms arrive.
Chance of rain on an average day: 20%
Rainfall climatology for Athens. The live hour-by-hour answer for today loads at the top of this page from Open-Meteo and refreshes through the day — the figures below describe a typical year, not today.
Last updated: · Live forecast data refreshes hourly.
| Annual rainfall | 402mm |
| Rain days per year | 72 |
| Odds on an average day | 20% |
| Wettest month | December — 64mm over 11 days |
| Driest month | July — 6mm over 1 days |
| Rain type | brief showers |
| Best dry window | May through September is virtually rain-free with intense sunshine and over 12 hours of daily light. |
| Worst rain window | December through February brings the most rain, though still modest compared to northern Europe. |
December delivers 967% more rain than July (64mm vs 6mm). That gap is the difference between planning around showers and ignoring them.
No single month holds more than 16% of the annual total, so rain in Athens is spread through the year — there is no season you can rely on being dry.
Athens rain typically comes as discrete showers, so a compact umbrella and a flexible plan are usually enough.
Rain falls on about 11 days in December against 1 in July — the frequency swing matters more for planning than the millimetre totals.
Climate normals. Use them to judge whether today's live forecast at the top of the page is typical or unusual for the season.
| Month | Rainfall | Rain days | Chance on a given day | Highs |
|---|---|---|---|---|
| January | 57mm | 10 | 33% | 13°C |
| February | 46mm | 8 | 27% | 13°C |
| March | 41mm | 7 | 23% | 16°C |
| April | 31mm | 5 | 17% | 21°C |
| May | 22mm | 4 | 13% | 26°C |
| June | 11mm | 2 | 7% | 31°C |
| July | 6mm | 1 | 3% | 34°C |
| August | 7mm | 1 | 3% | 34°C |
| September | 15mm | 3 | 10% | 31°C |
| October | 51mm | 9 | 30% | 26°C |
| November | 56mm | 10 | 33% | 21°C |
| December | 64mm | 11 | 37% | 16°C |
Rain probability is the chance that at least 0.2mm falls at your location — not how long it rains. For Athens we combine the hourly probability curve, expected volume in millimetres, and the city's own rainfall record into a single umbrella verdict.
| Factor | Weight | What it measures |
|---|---|---|
| Hourly probability | 40% | Peak and sustained chance of measurable rain across the next 24 hours. |
| Expected volume | 30% | Total millimetres, which separates a passing shower from a genuine soaking. |
| Timing & duration | 20% | When rain starts, when it eases, and the longest continuous dry window. |
| Local rain type | 10% | Drizzle, brief showers, thunderstorms or monsoon — each needs different gear. |
Live hourly values come from Open-Meteo and refresh through the day. Monthly rainfall figures are climate normals, so they describe a typical year rather than a forecast.
Athens records rain on roughly 72 days a year — about a 20% chance on any given day — totalling around 402mm.
December, with about 64mm over 11 rain days. That is 16% of the entire year's rainfall in a single month.
July is the driest month at 6mm across roughly 1 days. May through September is virtually rain-free with intense sunshine and over 12 hours of daily light.
Almost never needed from May through September — Athens summers are bone-dry. Pack an umbrella only for winter visits when Mediterranean storms arrive.
No. Probability is the chance that at least 0.2mm of rain falls at your location at some point in the period. Check the expected millimetres alongside it: 40% with 0.4mm is a passing shower, 40% with 12mm is a soaking.