Hiking in the mountains in summer is an exciting activity that lets you discover breathtaking landscapes and recharge in the heart of nature. However, to make the most of this experience, choosing the right outfit is essential. Mountain conditions can vary considerably, even in summer, and it's crucial to be well equipped to stay comfortable and safe. Check out all our tips for choosing the ideal outfit for summer mountain hiking.
Key criteria for choosing your hiking or trekking outfit in the mountains
Everyone has their own approach to hiking, and it's essential to tailor your outfit to your specific needs. Here are a few criteria to consider to help you make the best choice:
- The length and intensity of your hiking trip: For a short, easy hike, simple, comfortable clothing may be enough. For a more demanding or multi-day hiking trip, choose clothing that provides good support, excellent breathability and protection from the elements.
- Altitude: The higher you climb, the lower the temperature drops. On average, it falls by 6°C for every 1,000 metres. Even in summer, you may encounter snow in the mountains, so it's important to prepare clothing suited to temperature variations.
- Your personal sensitivity to the cold: Some people feel the cold more than others. It's important to know your own sensitivity so you can choose clothing that keeps you both warm and dry without causing overheating. If you're particularly sensitive to the cold, don't hesitate to bring extra layers even if the weather looks mild.
Choosing your hiking clothing for summer: the top half
For a good hiking outfit in the mountains in summer, choose a lightweight, breathable t-shirt. Its main job is to wick moisture away from your body and keep you dry. A t-shirt with UV protection is also recommended, as the sun is stronger at altitude.
What’s more, even in summer, the three-layer system still applies, so you’re prepared for changing conditions. Pack a mid-layer, such as a lightweight, breathable fleece, for insulation when needed. It will come in handy during breaks or if temperatures drop.
Finally, you need a jacket that protects you from the elements (wind, rain…). A water-resistant jacket may be enough, but a hiking jacket that is fully waterproof is preferable, as a heavy shower or storm can arrive quickly. Make sure it is breathable too, to prevent sweat building up inside.
What materials should you choose?
T-shirts made from synthetic fabrics are breathable and quick-drying, making them perfect for your summer mountain hiking outfit. These materials allow excellent sweat evaporation, helping to maintain a comfortable body temperature.
For multi-day hikes, merino wool provides good temperature regulation and naturally resists odours, so you can wear the same t-shirt for several days without discomfort. Merino wool is also very soft and does not irritate the skin, even when worn directly against it.
For anything beyond a simple stroll, avoid cotton, which retains moisture and dries slowly, as this can lead to rapid chilling and a feeling of discomfort.
Choosing your summer hiking clothing: the bottom half
- Shorts: Hiking shorts are ideal for hot days, giving you plenty of freedom of movement. However, they are not suitable for all weather conditions, particularly at high altitude, where temperatures can be low. Shorts with zipped pockets are handy for keeping your valuables secure.
- Trousers: Essential for high-altitude hikes, hiking trousers protect you from wind, showers and cooler temperatures. Hiking trousers are designed to be lightweight, durable and unrestricted in movement. Some models feature reinforcements and ventilation systems for added comfort.
- 2-in-1 trousers: Offering great versatility, these trousers can be converted into shorts as needed, making them ideal for significant temperature changes. They allow you to adapt easily without having to change clothes.
The best shoes for summer
The walking shoes you wear for summer mountain hiking need to be breathable enough to stop your feet becoming soaked with sweat, which increases the risk of blisters. Look for shoes with insoles designed to wick away moisture and lightweight, breathable materials. Make sure they provide good support and grip on varied terrain.
Low-cut walking shoes are often preferred in summer because they are lighter and offer better ventilation. They are ideal for less rugged terrain and shorter hikes. Mid- or high-cut boots are better suited to rugged terrain or longer hikes. They offer more ankle support and better protection from impacts. Don’t overlook waterproofing in case of rain, either.
For more information, read our guide to choosing hiking shoes.
Essential gear for summer mountain hiking
To complete your summer mountain hiking outfit, certain accessories can prove very useful:
- Cap: A cap to protect you from the sun and prevent heatstroke. The cap should be made from breathable material to prevent heat build-up.
- Neck gaiter and gloves: A neck gaiter and lightweight gloves can be useful to bring, especially for early-morning starts and on shaded terrain.
- Sunglasses and sunscreen: Protect your eyes and skin from the intense UV rays at altitude. Choose sunglasses with high UV protection and a sweat-resistant sunscreen. Apply it to all areas of your body not covered by your clothing.
- Hiking poles: They can provide extra support on rugged terrain and reduce muscle fatigue. Adjustable poles are practical for adapting to different terrains and inclines.
- Backpack: Go for a lightweight backpack with good ventilation and enough compartments to organise your gear.
