Seasons, onset, breaks and withdrawal of the monsoon
Whole chapter · 10–16 focused hours
India: climate and the monsoon
A first-attempt learner with school-level reading, basic arithmetic and little retained geography; later chapters assume the earlier physical-process chapters have been studied. Basic literacy remediation and Geography optional are outside this estimate.
Includes
- Selected primary readings and their diagrams/maps
- Brief comparison notes and process/map sketches
- Available mapped practice, mistake review and one initial recall review
Separate time needed
- Later spaced revisions and full-paper mocks
- Reading every optional exercise or every source book in full
- Excludes reteaching global atmospheric physics, operational forecasting training and a continuing daily weather-reading budget.
Editorial planning estimate; not learner timing data
- Cold weather season: western disturbances and winter rain in the north-west, north-east trades, temperature pattern
- Hot weather season: loo, dust storms, kalbaisakhi, mango showers, cherry blossom showers
- Onset over Kerala about 1 June and IMD criteria; advance of the two branches; whole country covered by about 8 July; duration decreases northward
- Breaks in the monsoon: shift of the trough to the foothills, rain in the Himalaya and Tamil Nadu, dry plains
- Retreating monsoon: withdrawal from September, October heat, north-east monsoon rain on the Coromandel coast, post-monsoon cyclones
- Western disturbances as extra-tropical systems in the westerlies bringing winter rain and snow to north-west India
Where to study this topic
- India: Physical Environment, Class XI, chapter 4: Climate (2026-27) ↗
ch. 4, Climate, p. 1-15 (book pages 27-41)
- Onset and Advance of Monsoon ↗
Normal dates of onset
- Frequently asked Questions (FAQs) on Monsoon ↗
Onset and withdrawal, p. 12-13
Whole chapter reading
- India: Physical Environment, Class XI, chapter 4: Climate (2026-27) ↗
Climate: regional controls, monsoon mechanism, seasons, rainfall distribution and climatic regions; date any numerical examples
- Frequently asked Questions (FAQs) on Monsoon ↗
Definitions and mechanism, onset/withdrawal criteria, ENSO/IOD and rainfall variability; use question headings, not historical rainfall ranks
- Onset and Advance of Monsoon ↗
Normal onset/advance and withdrawal maps; distinguish climatological normal dates from the observed dates for a particular year