Orpington's weather is characterized by mild temperatures during spring, with April and May averaging around 11-17°C. Summer months bring warmth, with July being the warmest at an average of 18°C, while August and September hover around 16°C. Autumn is cool, with October averaging 12°C, while winter sees temperatures drop to around 4-6°C during January and February, before rising slightly in March. The temperature fluctuates between daytime highs and nighttime lows throughout the year, but generally remains relatively stable without extreme variations.