Seaside's winters are mild, with temperatures ranging from just below freezing to the mid-20s Celsius in January and February, averaging around 10-11°C. As spring arrives, temperatures gradually rise, reaching highs of up to 28°C by March and April, with averages around 12°C. Summer months see a slight increase in temperature range, but still remain relatively mild, with July being the warmest month on average at 13°C. Autumn brings cooler temperatures again, with a significant drop in October's minimum temperature to just below freezing, while November and December experience a mix of cold snaps and milder days.