This coastal route from Kincardine to Newburgh brings a steady maritime mix: abundant cloud, on‑off drizzle or light showers, and recurring brighter breaks that lift warmth before cloud rebuilds. May, June, and September align with longer daylight, generally mild conditions by the sea, and workable dry spells between passing showers. Expect variability rather than extremes, with sea breezes cooling exposed headlands, occasional heavier pulses of rain, and quick shifts through the day.