Daivajna Vallabha · Attributed to Varahamihira
Chapter 11 · Rain
वृष्टिनिर्णयाध्यायः
पक्षे सिते सलिलराशिगताः शुभाश्चेत् केन्द्रद्वितीयसहजालयगाश्च सम्यक् ।चन्द्रोऽथवा सलिलराशिविलग्नगश्चेत् वृष्टिं वदेन्नियतमेव तदा धरित्र्याम् ॥ २ ॥
In the bright half of the month, good planets may stand well in water signs. They may also be in the corner houses, the 2nd or the 3rd. Then say rain on earth is sure. Say the same if the Moon is in a water sign that is the rising sign.
Simple meaning: In the bright half, good planets in water signs, or the Moon in a water rising sign, bring rain.
चन्द्रार्कयोः शनिसितौ यदि सप्तमस्थौ तुर्येऽष्टमे च भवतो यदि वा विलग्नात् ।
If Saturn and Venus stand in these places, rain will come soon in the rainy season.
कर्कटमृगमीनानामुदये चन्द्रं सितोऽपि वृष्टिकरः ।
Cancer, Capricorn or Pisces rising, with the Moon or Venus in it, tends to bring rain.
शीतद्युतिः सलिलराशि विलग्नगामी वीर्यान्वितेन भृगुजेन निरीक्ष्यमाणः ।
A Moon in a water rising sign, seen by strong Venus, brings heavy rain.