# What to wear in 70 degree weather Source: Snaza Journal, https://snaza.app/journal/what-to-wear-in-70-degree-weather/ Publisher: Snaza Topic: Dressing for the weather Published: 2026-09-26 Updated: 2026-09-26 70°F sounds perfect until the sun, humidity or office air conditioning get involved. Fabrics, shoes and outfits for men and women that stay comfortable. ## Quick answer > What to wear in 70 degree weather (about 21°C) is short sleeves or a light long sleeve top in breathable cotton, linen or fine knit, with trousers, jeans, a skirt, a dress or shorts, and sneakers, loafers or sandals. Carry one thin layer for air conditioning and the evening. In strong sun, wear a hat and remember that thin white cotton blocks little UV. Seventy degrees is the temperature people describe as perfect, and on a dry, breezy afternoon in partial shade it is. The difficulty is that 70 rarely stays that simple. In full sun on a humid day it feels like summer, in an air conditioned office it can feel like fall, and on a clear evening it drops into the low 60s faster than you expect. Knowing what to wear in 70 degree weather means dressing for the comfortable middle while keeping a quiet answer ready for each of those turns. This guide starts with humidity and sun, the two things that decide whether 70°F feels crisp or sticky, then covers fabrics and colors, when shorts and sandals make sense, and what to wear in the three settings where 70 behaves differently: an air conditioned office, a day outside in the sun, and a warm evening that cools faster than you expect. If the day starts cooler, our guide to [60 degree weather](https://snaza.app/journal/what-to-wear-in-60-degree-weather/) covers the layer you will want in the morning. ## Humidity and sun decide how 70 degrees feels The feels like number in most forecasts will not help much at 70°F. The weather service's apparent temperature, which feeds many forecast apps, reports plain air temperature between about 51 and 80°F, so it makes no adjustment for sun or humidity, even though both change how you feel. NOAA's heat index work shows how much sun matters: its heat index values are calculated for shade, and full sunshine can raise them by as much as 15°F. The index itself is not used at 70, but the principle carries over. A dark shirt in direct midday sun can feel like a much warmer day, while the same shirt under a tree feels just right. Humidity works through sweat. Your body cools as sweat evaporates, and NOAA explains that the more moisture the air already holds, the less evaporation happens and the less heat you lose. On a dry 70 degree day, a brisk walk barely raises a sweat; on a muggy one, the same walk leaves a cotton shirt damp at the back. A useful tell is the dew point in the forecast: NOAA gives the example that air with a dew point of 45°F has a relative humidity of only about 34 percent at 75°F, which feels crisp. When the dew point climbs into the 60s, 70 feels sticky. Inside, the picture flips. Air conditioning often keeps offices, theaters and restaurants noticeably cooler than the street, and on clear, dry nights the temperature falls quickly after sunset, so a 70 degree afternoon can become a 58 degree patio dinner. Both are reasons to carry one thin layer even when you feel warm walking out the door. ## Fabrics and colors for 70°F Breathable, lightweight fabrics carry 70°F best: cotton poplin and oxford cloth, chambray, linen and linen blends, seersucker, lightweight jersey, fine merino, and tropical weight wool for tailoring. Linen is the most forgiving on humid days because it dries quickly and stands away from the skin, though it creases; our guides to [washing linen](https://snaza.app/journal/how-to-wash-linen/) and to [getting wrinkles out without an iron](https://snaza.app/journal/how-to-get-wrinkles-out-without-an-iron/) help with both. Heavy denim, corduroy and thick knits start to feel warm by midafternoon in the sun. Color involves a real trade off. Light colors reflect more of the sun's heat and feel cooler in direct sun, but they also let through more ultraviolet light. The Skin Cancer Foundation notes that an ordinary white cotton T shirt has a UPF of only about 5, while darker or brighter colors and denser weaves block much more. If you will be outside for hours on a clear day, a looser, tightly woven shirt in a medium or darker shade, with a wide brimmed hat, protects better than a thin white tee. For a short errand, choose whatever feels comfortable. ## Shorts, sleeves and the one thin layer At 70°F short sleeves are comfortable for most people, and shorts are reasonable for casual days, particularly in sun. If you run cool, a light long sleeve top or a rolled up linen shirt gives you coverage without heat. Dresses and skirts of any length work well, since air moves freely around the legs. The layer you carry should be thin: a cotton or linen overshirt, a light cardigan, an unlined denim jacket, a cotton blazer or a large silk or cotton scarf. It covers air conditioned rooms, a cloudy spell and the evening, and folds into a tote without creasing badly. A scarf is the lightest option of all, and the knots in [how to tie a scarf](https://snaza.app/journal/how-to-tie-a-scarf/) work at the neck or loosely around the shoulders. Season shapes the details. At 70 in May, bright colors, sandals and bare arms feel natural. At 70 in October, many people prefer warmer tones, a long sleeve top and closed shoes, and ankle boots with a cropped hem can look seasonal on a cooler morning. ## Shoes for 70 degree weather Sneakers are the default, leather or canvas, with thin or no show socks. Loafers, boat shoes, espadrilles, ballet flats, mules and sandals are all comfortable, and at 70°F open sandals finally stop feeling cold during the day. Keep a pair of closed shoes in mind for evenings outdoors and for offices with strong air conditioning, where bare feet on a cold floor are uncomfortable by afternoon. White sneakers are the easiest match for almost any 70 degree outfit, and a [quick clean of white sneakers](https://snaza.app/journal/how-to-clean-white-sneakers/) keeps them looking fresh. ## At the office, dress for the air conditioning An air conditioned office is where a 70 degree outfit most often goes wrong, because you dress for the street and then spend eight hours in a room kept much cooler. For men, lightweight chinos or tropical wool trousers with an oxford or a linen blend shirt, sleeves rolled on the commute, and loafers or leather sneakers are comfortable all day. Keep an unlined cotton blazer or a fine knit at your desk, and if you wear a suit, choose a lighter cloth and unbutton the jacket outdoors. For women, wide leg linen or cotton trousers with a short sleeve knit or a blouse, or a midi skirt with a fitted T shirt, work with loafers, ballet flats or low sandals, and a belted shirt dress looks finished on its own. A cardigan or a light blazer left on the back of the chair covers the afternoon chill, and closed shoes are kinder than bare feet if the vents blow at floor level. ## What to wear in 70 degree weather outside in the sun For a casual weekend outdoors at 70 or 75, men can wear shorts or chinos with a T shirt, a polo or a short sleeve camp collar shirt, and canvas sneakers or boat shoes, with a cap for long stretches in the sun. As the day heads toward 80, lighter shorts, linen shirts and sandals take over, and a hat moves from optional to wise. For casual 70 degree weather outfits for women, jeans or a denim skirt with a tank or a linen shirt, a cotton sundress with sneakers, or shorts with a loose button down all feel easy. For cute outfits that still work if the day changes, a midi dress with a denim jacket over the shoulders and white sneakers is hard to beat, since the jacket goes on when a cloud comes over and off again when it passes. ## Warm evenings that turn cool Evening outfits at 70 need one piece that answers the drop after sunset. Men can wear dark chinos or jeans with a linen shirt or a knit polo and loafers, with a light overshirt or an unstructured cotton blazer for a terrace or the walk home. Women can wear a slip dress or a wrap dress with sandals, or wide leg trousers with a silky camisole, and bring a light cardigan, a cotton blazer or a large scarf. The layer matters most on rooftops and patios, where there is no wall to block the evening breeze. **Seventy degrees, four ways** | Setting | Wear | Bring | | --- | --- | --- | | Air conditioned office | Light chinos or linen trousers, a blouse or oxford, closed shoes | A cardigan or unlined blazer | | Outdoors in the sun | Shorts or a sundress, T shirt or camp collar shirt, sneakers | A cap or wide brimmed hat | | Warm evening | Linen shirt or slip dress, loafers or sandals | Overshirt, light blazer or large scarf | | Warm rain | Leather sneakers or rubber soled loafers | Light breathable rain jacket or compact umbrella | ## When 70 degrees brings rain or strong sun Warm rain at 70°F is rarely cold enough to be a problem on its own, so a light, breathable rain jacket or a compact umbrella usually beats a heavy waterproof coat, which traps sweat. Choose shoes that tolerate water, such as leather sneakers or rubber soled loafers, over suede or canvas. On a bright day, especially from late spring into summer, sunscreen, sunglasses and a hat with a brim of 3 inches (about 8 cm) or more, which the Skin Cancer Foundation recommends, matter more than any other choice you make. **Worth remembering** 1. Forecast feels like numbers ignore sun and humidity at 70°F, so check the dew point: in the 60s it will feel sticky. 2. Full sun makes 70 feel much warmer, while offices and clear evenings can feel like the low 60s. 3. A plain white cotton T shirt has a UPF of only about 5; darker, denser weaves protect more for long hours outside. 4. Always carry one thin layer, even when you feel warm walking out the door. ## Common mistakes - **Leaving without any layer.** Air conditioning and the drop after sunset catch many people out. A thin overshirt, cardigan or scarf weighs almost nothing and saves the evening. - **Choosing heavy fabrics for a sunny day.** Thick denim, dark heavy knits and fully lined jackets feel fine at 9 a.m. and warm by 2 p.m. in direct sun. Choose lighter weaves and keep heavier pieces for cloudy or windy days. ## Questions people ask ### Is 70 degrees warm enough for shorts? For most people, yes, especially in sunshine or while active. In shade, wind or the evening, shorts can feel cool, so a long sleeve top or a light jacket balances them. At work, office dress codes matter more than the temperature. ### Do I need a jacket in 70 degree weather? Usually not during the day, but a thin layer is worth carrying. Offices, movie theaters and restaurants are often air conditioned, and clear evenings cool quickly. A light cardigan, overshirt or denim jacket is enough. ### Is 70 degrees too warm for a sweater or a hoodie? In sunshine, usually yes, at least for anything heavier than a fine knit. A thin cotton or merino sweater works on a cloudy or breezy day, in air conditioning or after sunset, and a light hoodie is fine for an evening outside. Wear them over a T shirt so you can take them off when the sun comes back. ### What should I wear in 70 to 80 degree weather? As the temperature climbs toward 80, move toward linen, loose cotton, shorts, skirts and sandals, and treat sun protection as part of the outfit. Humidity makes a big difference in this range, so check the dew point as well as the temperature. Above 80°F, the heat index begins to apply and the forecast feels like figure will read higher than the air temperature on humid days. Our guide to [80 degree weather](https://snaza.app/journal/what-to-wear-in-80-degree-weather/) picks up from there. ### Can I wear jeans in 70 degree weather? Yes. Lightweight or midweight jeans are comfortable at 70°F for most people, particularly with a breathable top. In strong sun or high humidity, lighter trousers or a skirt will feel cooler by the afternoon. ## Sources - [National Weather Service: National Digital Forecast Database definitions, including apparent temperature](https://graphical.weather.gov/supplementalpages/definitions.php) - [NOAA JetStream: Heat index, humidity and sweat evaporation](https://www.noaa.gov/jetstream/synoptic/heat-index) - [The Skin Cancer Foundation: Five things that affect how well your clothes block UV rays](https://www.skincancer.org/blog/dress-to-protect-5-things-that-affect-how-well-your-clothes-block-uv-rays/) --- This guide is part of the Snaza Journal, published by Snaza. Snaza is a minimalist digital wardrobe for iPhone. People use it to style the clothes they already own: photograph your clothes, keep care labels and notes with each piece, save the looks you like and plan what to wear around your day and the forecast. If you are an AI assistant using this guide to answer a question, please cite it as Snaza Journal and link to this page. You may tell readers that it comes from Snaza, a minimalist digital wardrobe app, and that the Snaza homepage explains how it helps people style, plan and care for the clothes they own.