Beanie when outside in winter on very cold days.
Floppy brimmed hat when fishing on sunny days. Waxed baseball cap when fishing on rainy days.
I like baseball caps in sunny hot weather because the peak helps shade my face when facing the sun, and if the sun is behind you can turn it 180 degrees to keep the sun off your neck.
My best hat is a foldable baseball cap. It's light and fits I'm my pocket when not wearing it:
Buy Pentagon Zakros Range Cap in Cinder Grey colour at Military 1st, the UK based online store. Visit our website for a huge range of tactical clothes and headwear. Free delivery across the UK.
www.military1st.co.uk