Wind & rain come from Open-Meteo for the Yai Creek mooring (12.854°N, 100.905°E), refreshed on the server every 30 minutes. A day is wind-flagged when either sustained wind or gusts reach your wind limit (default 10 kn); the hero strip shows peak gust hour-by-hour, over-limit hours in red. Rain shows the peak chance and total across your window.
Creek current isn't measured — it's inferred from how fast the tide height is changing (cm/hr) at your launch and return. Through a narrow estuary mouth the flow is roughly proportional to that rate, so a fast-changing tide means strong water through the Yai Creek mouth (hardest mid-tide, calmest near high or low water). A launch/return is flagged above the fast-current limit (default 28 cm/hr — tuned to the tricky ~2:30pm 10 Aug case). Treat it as guidance on timing, not an exact current speed.
Onshore wind & waves. The wind chip and hero show the direction at launch. When that wind blows from the open-sea half (within 90° of the “open sea is toward” bearing in Advanced, ~250° WSW at Yai Creek), it's flagged onshore — wind off the sea piles up bigger waves at the mouth, which is what made 10 Aug lumpy. Adjust that bearing if it doesn't match your spot.
Sunset (and the daylight left after your return) comes from Open-Meteo daily data. Weather covers roughly the last 30 days through ~16 days ahead, so you can review recent days and weekends too; beyond that range (and in 2027) it's blank. Wind/rain are genuine forecasts for future days — re-check close to the day.