[Subtype Zero]

From one of my posts in another thread:

In my testing, I have found that the weather updates according to a fairly regular schedule: within 32-34 hours after leaving port, even under high TC. This interval lengthens by one hour for each subsequent change in the weather, resulting in longer and longer intervals between weather changes.

In order to avoid getting stuck with long periods of unchanging, lousy weather, you must avoid high TC for long periods of time AND avoid saving IF you think the weather is about to change. After the weather changes in some way, go ahead and save to your heart's content (note: as long as you are not submerged, near land, or near any sinking ships, etc. ).

You can get a rough estimate of when the weather in your game is about to change by 1) keeping track of the number of weather changes that have already occurred, 2) take the number found in step 1 and add 32-34 to it, 3) estimate when the weather last changed in your game, and 4) add the number found in step 2 to the time of the last weather change you found in step 3. For example, say you have been at sea for one week and have noticed approximately 5 weather changes. Add 5 to 32 and 34 for a range of 37 to 39 hours. If your weather last changed at 0300 hours on June 1, then you can expect the weather to change next time sometime between 1600 and 1800 hours on June 2.