I once had 1 cold wave and 4 fogs during the day in Tundra.
Imao - they should change the weather to more "real life" state.
- No more wind rotating clockwise.
- No more wind raises and cut it's strength from strong to calm and back.
- No more global wind.
Wind must be mostly average (but yet gives us full speed to shorten sailing time) and occasionally raise to hurricane (damaging full sails and planks if you stay wrong side to waves) and rarely drop to calm state. It should blow one direction for a while, then change it's angle. Slight changes are often. More changes - occasionally, limit possible changes to reasonable angle. And btw, in real life wind mostly blow from west to east (that's why airplanes flies few hours longer to US than back to Europe).
- Rain must appear when it's above zero'C (32'F). Snow - when it's below (in Tundra sometimes it's raining with -20'C (-4'F) and sometimes it's snowfall when it's +25'C (+77'F). Rain must add some weight to a vessel and lower it's speed for a while. Snow should slow down sails control.
- Strong FOG should appear before sunrise with calm wind. Average one - after the rainfall. Fog should affect damned ships too.
- Tornado should land just one single huge whirlwind predictable and visible from far away, so our goal would be not to play pacman, but to leave/avoid dangerous area at all cost. St. Elmos flares before storm would be nice addition. Lightning also should rarely strikes masts, do some damage.
And yeah.
Coldwave in Polar, Tundra and Temperate - should bring clear bright skies and calm wind, while HeatWave - rains, hurricanes and cloudy skies.
Coldwave in Tropic, Desert and Equatorial - should bring storms, clouds and tornadoes, while HeatWave - just calm and clear.
There should not be Tornadoes in Polar, Tundra and Temperate. Instead some snowstorm must be introduced.