Frankfurt Weather by Month

Frankfurt has a temperate oceanic climate with continental influence, giving it moderately cold winters and warm summers. The city receives 611mm of rain annually, distributed fairly evenly throughout the year with a slight summer peak. Frankfurt’s position in the Main River valley creates a microclimate that’s often 1°C to 2°C warmer than surrounding areas. The city averages 1,600 sunshine hours per year.

Frankfurt Weather by Month: Temperature, Rainfall, and Sunshine

Climate data below comes from 30-year averages from Frankfurt Airport (FRA), 12 km southwest of the center. Frankfurt’s position in the Upper Rhine Plain, sheltered by the Taunus mountains to the north, gives it milder winters than Berlin or Munich, but also more humid summers.

Frankfurt Monthly Climate Comparison Table

Frankfurt Weather in January and February: Cold, Grey, Low Light

January is Frankfurt’s coldest month at 4°C (39°F) daytime and -1°C (30°F) nighttime with 45mm of rain/snow across roughly 9 days. February improves marginally to 6°C (43°F) with slightly less precipitation. These are Frankfurt’s gloomiest months: January provides just 54 hours of sunshine (less than 2 hours daily) and December only 42 hours. Grey skies dominate, and when the sun does appear it’s low and weak. Snow falls on roughly 10 days each winter but significant accumulation that lasts more than 24 hours occurs only 2 to 4 times per season. The Christmas market on the Römerberg runs through late December, providing a festive reason to be outdoors despite the cold. For best time to visit Frankfurt, winter is the budget pick but not the sightseeing pick.

Frankfurt Weather in March and April: Spring Uncertainty

March reaches 11°C (52°F) with a big jump in sunshine to 128 hours. April warms to 15°C (59°F) with 175 sunshine hours and only 41mm of rain. Spring in Frankfurt is unpredictable: you can get a 20°C (68°F) day followed by a 7°C (45°F) day within the same week. April is one of the drier months, making it a decent time for the Palmengarten botanical gardens (Siesmayerstrasse 61, 22 hectares, EUR 7) as spring flowers emerge. The outdoor cafes in the Alt-Sachsenhausen district begin setting up terraces in late March. The Main River promenade becomes walkable without winter gear by April. Pack layers and a compact umbrella as spring showers can appear suddenly.

Frankfurt Weather in May and June: The Best Window

May delivers 20°C (68°F), 216 sunshine hours, and 63mm of rain over roughly 9 days. June brings 23°C (73°F), 225 sunshine hours, and slightly less rain at 58mm. These are Frankfurt’s best months: warm enough for outdoor dining along the Main River, the Apple Wine Festival fills the Roßmarkt square, and the city’s green spaces (the 48-hectare Grüneburgpark, the Chinese Garden in the Bethmannpark) are at their peak. The long daylight (sunset after 9:20pm in June) extends sightseeing hours. Hotel prices in May and June are moderate, spiking only during major trade fairs. For a complete list of outdoor attractions, see things to do in Frankfurt.

Frankfurt Weather in July and August: Warmest, Wettest, and Trade Fair Gap

July and August both average 25°C (77°F) with nighttime lows of 15°C (59°F). July is the wettest summer month at 65mm, often from short but intense afternoon thunderstorms. Humidity averages 66 to 68%, making the air feel heavier than the temperature suggests. August has slightly less rain at 57mm. Summer is the trade fair off-season (most major fairs run March-May and September-November), so hotel prices are lower than spring and autumn. The Main River becomes a social hub with locals grilling, cycling, and drinking on its grassy banks from the Eiserner Steg to the Holbeinsteg bridges. The open-air Sommerwerft theater festival runs at the Weseler Werft riverside site. Air conditioning is not standard in German hotels; confirm A/C when booking for July and August. The festival calendar lists summer events including the Mainfest in August.

Frankfurt Weather in September and October: Golden Autumn with Trade Fair Crowds

September cools to 20°C (68°F) with 163 sunshine hours and 50mm of rain. October drops to 14°C (57°F) with 52mm of rain and only 109 hours of sunshine. September is Frankfurt’s second trade fair peak after March/April: the IAA Mobility auto show (biennial, odd years in Frankfurt, even years in Munich) and the Frankfurt Book Fair (mid-October) fill every hotel. During the Book Fair, 4-star rooms that normally cost EUR 120 jump to EUR 350 to 450. If you’re not attending, check the best time to visit Frankfurt guide for exact fair dates to avoid. Outside fair weeks, September and early October offer pleasant weather for the city’s apple wine taverns in Sachsenhausen, the Goethe House museum, and the Museumsufer (Museum Embankment) cluster of 16 museums along the Main’s south bank.

Frankfurt Weather in November and December: Dark, Damp, Christmas Markets

November drops to 8°C (46°F) with 50mm of rain and the year’s lowest sunshine outside December at 55 hours. Skies are overcast roughly 70% of the time. December brings 5°C (41°F) and 56mm of precipitation, often as cold rain rather than snow. The Frankfurt Christmas Market on the Römerberg (late November to December 22) is one of Germany’s largest with roughly 200 stalls drawing 3 million visitors. The market’s mulled wine (Glühwein, EUR 4 to 5 plus EUR 3 deposit for the ceramic mug) and roasted almonds provide warmth. The market operates Sunday to Thursday 10:00am to 9:00pm, Friday and Saturday 10:00am to 10:00pm. It’s extremely crowded on Friday and Saturday evenings; visit Monday to Thursday at lunchtime or early afternoon for breathing room. December hotel prices spike 30 to 50% above the winter baseline during the market, particularly on weekends. Pack a warm waterproof coat, gloves, and sturdy shoes for the cobblestones.

Frankfurt Seasonal Packing Recommendations

Winter (December to February): heavy coat, scarf, gloves, waterproof shoes, thermal layers. The Römerberg cobblestones become slippery in frost. Summer (June to August): lightweight clothing, a rain jacket for sudden thunderstorms, sunscreen. Spring and autumn (March to May, September to November): layered clothing, a mid-weight waterproof jacket, comfortable walking shoes for the Museumsufer. Year-round: an umbrella (Frankfurt gets rain year-round, averaging 10 to 15 rainy days per month), a reusable water bottle (tap water is safe and excellent).