Those swirling lines and triangular symbols on a weather map are a language. Once you can read it, a single chart tells …
Sharing your station’s data to networks like Weather Underground and the Ambient network is free, easy, and turns your h…
Measuring air temperature accurately is far harder than it looks, and most home stations get it wrong for one avoidable …
Fog is simply a cloud at ground level, but the different ways it forms explain why some mornings are socked in and other…
A heat dome can lock a region into days of dangerous, record-breaking heat. The mechanism behind it is a particular trap…
La Niña reshuffles weather patterns across the globe in broadly predictable ways. Here’s what the pattern is, and the ki…
Thiruvananthapuram (Trivandrum), the capital of Kerala, sits on the coast at the southern tip of India's west coast, on low hills near the Arabian Sea at approximately 8.52°N, 76.94°E. Its near-equatorial coastal position gives it a tropical monsoon climate (Köppen Am) — hot, humid and rainy — with an unusually long rainy season and among the most stable temperatures of any Indian city.
There is essentially no seasonal temperature change: the annual mean is around 27°C and fluctuates by barely 2.4°C across the year, with daytime highs near 31–33°C and warm, humid nights. Rain begins as early as April in showers and thunderstorms; the southwest monsoon then arrives around the start of June and brings heavy rain through August, with high humidity and abundant cloud.
There is no true winter, but the driest, most comfortable stretch runs from January to March, with warm days, lower humidity and reduced rainfall. Unusually, the city also receives substantial rain from the retreating northeast monsoon between October and November — November alone can bring over 200 mm — giving it one of the longest rainy seasons in India.
Thiruvananthapuram receives on the order of 1,700–1,800 mm of rain a year — less than Kochi to the north — but spread over an exceptionally long rainy season: showers begin in April, the southwest monsoon dominates from June, and the northeast monsoon brings further heavy rain into November. Live rainfall, humidity, and pressure readings for the city are shown in the panels above.
Thiruvananthapuram has one of the most remarkably stable temperature regimes of any city in India, its annual mean varying by only around 2.4°C. Sitting at the southern tip of the west coast, it feels both monsoons — the southwest monsoon in summer and the retreating northeast monsoon in autumn — giving it an unusually long rainy season.
To follow any single measurement in Thiruvananthapuram more closely, use our live instruments: the online barometer for atmospheric pressure, the thermometer for temperature, the hygrometer for humidity, the anemometer for wind speed, the wind vane for wind direction, and the rain gauge for rainfall.