Climate: Bahía Blanca’s climate is humid subtropical. The climate is influenced by the location of the city by the ocean with warm superficial streams by the shores. Since the city is located in the limit between Pampas and Patagonia, it is warm and more humid to the north and rapidly becomes drier to the south.
Temperature extremes are notably frequent when compared to other cities in the Pampa region: daytime temperatures tend to reach very high values in the summer, and nighttime lows can be very cold in the winter. Summer brings thunderstorms and temperatures usually in the 30 to 35 °C (86 to 95 °F) range, although 43.8 °C (110.8 °F) has been recorded, with nights between 14 and 18 °C (57 and 64 °F). Southerly winds often bring much cooler weather for short periods. Fall begins in March, and by late April the first frosty mornings may occur. During the winter, the weather is often dryer, high temperatures average 10 to 16 °C (50 to 61 °F) and nights from 0 to 6 °C (32 to 43 °F). Temperatures often drop below freezing: values of −6 °C (21 °F) are recorded often, and during stronger cold waves temperatures have plummeted to under −10 °C (14 °F).
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