How astrologers do weather forecasting?Why weather is so erratic sometimes? Actually it is all due to Astro-Meteorology. Astro-Meteorology is a science of forecasting weather and seasonal climates using the positions & alignments of celestial bodies. It attempts to link planetary configurations and zodiac signs to atmospheric changes on Earth. It tracks planetary aspects, lunar phases, and stellar positions to predict temperature shifts, ,storms, and precipitation.
India’s economy depends on good agricultural produce which depends on timely rain. Because of the importance of rains, great importance was given to accurate prediction about rains and this science was highly developed in India by ancient sages liked Garga, Parashara, Kashyap, Siddhasena and Varahamihira. The Moon in certain nakshatras joining with other planets or aspected by other planets cause or hinder rain . Moon is a watery planet. Other watery planets are Neptune and Pluto. Watery signs are Cancer, Scorpio and Pisces. Nakshatras that fall in watery signs are called watery nakshatras. These nakhatras are Punarvasu 4th Pada, Pushya, Ashlesha (Cancer);Vishakha 4th Pada, Anuradha, Jyeshtha(Scorpio);and Purva Bhadrapada 4th Pada, Uttara Bhadrapada& Revati(Pisces).
More the interaction between watery planets, watery signs and watery nakshatras more is the rain. In Mundane classic Adhbhut Sagar many combinations involving Moon, Nakshatras for no rain to heavy rains are given.
After knowing about watery planets, signs and nakshatras, we shall study about other methods of prediction about rains. Large Range forecasting of rain is done on the basis of horoscope made at the time of entry of Sun in Ardra nakshatra which enters on 22nd June at 12:26 hours in samvatsara 2083(2026-27).The monsoon arrives in Northern India when Sun enters Ardra Nakshatra in Gemini and crosses 6-40 degrees and when Sun reaches 10 degrees in Virgo on September 26,it begins to withdraw(This is South West monsoon which is simply known as monsoon in India).
Medium Range forecasting of rain is done on the basis of detailed study of impregnation of clouds. This is done when Moon through Poorvashadha nakshatra beginning from the first day of the bright fortnight of the Mrigacira month (November-December) .The impregnated clouds will deliver results as and when Moon enters the same nakshatra 195 days later which is any time after June following year.Entry of Moon in Rohini in ashadha krishna pakasha is used for short range prediction.
Ardra Parvesh Chart for this year is given below:-


There are Saturn and Sun in kendras, Lagna is a earthy sign Virgo with watery planet Moon in it .Rains will not be timely this year. Mars a malefic is aspected by another malefic Saturn. It means that in rainy season there will be many dry spells.
There are three benefics in the eleventh house of the Ardra Parvesh Chart. Eleventh and 12th house indicate Orissa, part of West Bengal, part of Andhra, East Coast etc. Jupiter is strongest planet in eleventh house. It indicates North East direction. North Eastern states of India are Arunachal Pradesh, Assam, Manipur, Meghalaya, Mizoram Nagaland, Tripura and Sikkim. Assam, Arunachal Pradesh and Meghalaya has heavy rains in this rainy season so far. Cancer sign indicates north direction.
Moon, another benefic indicates north west direction. States of India located in north west direction are Punjab, Rajasthan, Haryana, Himachal and Uttarakhand etc. It is in Virgo Rashi. Virgo RashI indicates south direction. Virgo Rashi has zero percent water and is a earthy sign. The Moon is aspected by Saturn from a watery sign Pisces which has full water. The planet Saturn is a key planetary representative of air(vayu) element and west direction. Pisces indicates North direction. On the whole this combination represents north and south direction on the western corner of India and includes Gujrat and Maharashtra also. But rains in these areas will be very heavy with strong winds and dry areas or spells in between.
.Hence house, rashi and strong benefic planets indicate that maximum rain in this rainy season will be in south-east, north-east,north and south direction on the western corner of India. and north direction of India which has proved correct so far. It should be remembered that benefic planets are in Cancer sign which has full water as per astro-meteorology,hence there will be heavy rains in directions indicated for rains.