IS 10322 Part 1 does not mandate a single specific IP rating for all outdoor luminaires — it requires that the luminaire be designed and marked with an IP rating appropriate for its intended environment, and that it actually achieves the claimed IP rating when tested.

Industry Expectations for Outdoor Luminaires

• Garden path lights / landscape luminaires: Minimum IP44 — but IP54 or IP65 is strongly preferred for Indian conditions
• Streetlights and area lighting: IP65 minimum — effectively the industry standard
• Luminaires near water features: IP65 or IP67

For Indian Conditions Specifically

Given Indian monsoon conditions — heavy rain, dust, humidity — I would strongly recommend designing for IP65. The cost difference in gaskets and housing design is minor compared to the field failure rate you will experience with IP44 products during Indian monsoons.

Critical: Ensure your IP rating claim is backed by actual IP testing per IEC 60529, not just a marketing declaration. BIS testing includes IP rating verification, and declaring an untested IP rating is grounds for registration rejection or market surveillance action.