I thought I speak about that a little bit, since it is that time of the year! Painting outside when it’s cold has it’s challenges, just like painting in real hot weather does. The biggest problem with watercolor painting is drying time. That means, if we do big washes (which I usually do) they won’t dry for a long time resulting in periods of unwanted waiting around, twittling my thumbs!
What’s the solution? There’s no real good one I am afraid. But there are things you can do that definitely help: If you’re near your car, you can use the car’s heater and fan. It works perfectly and only takes seconds if you crank it up on high!
If the sun’s out, it goes without saying to put it down and it dries very quickly.
If the sun is not out and you’re not near your car, try using less water and a bit of chinese white in your big background washes. It makes the paint flow slower and dry more quickly. A word of caution: it takes practice to gauge how much to use, if you use too much you’ll get opaque ugly soup, if you use too little it won’t do anything at all!
Lastly, you can break up your washes more. If you know your middle ground is darker than your sky (it almost always is), just don’t paint there at all in the first wash. Stop the sky halfway and leave the white of the paper. That way, you can immediately start painting without waiting since you never touched that part!
If it is colder than 0 degrees celsius, or 30 degrees F, I don’t recommend watercolor painting outside. I have had my washes freeze before and it’s just plain awful! Better wait for warmer weather!