Data-Driven Weather Allowances for Tenders
Stop guessing how many weather days to include in your bid. WeatherWise calculates precise, defensible weather allowances using 45+ years of site-specific climate data. Bid tighter. Win more.
Weather Allowances Based on Guesswork Cost You Bids
Contractors include weather allowances in tenders based on experience and rules of thumb. Too generous and your bid is uncompetitive. Too tight and you face cost overruns if you win. Either way, you lose.
The problem is that without site-specific data, there is no way to know the right number. Every estimator on your team will come up with a different figure for the same project.
How It Works
Four steps from site coordinates to data-backed weather allowances for your tender.
Enter Site Coordinates
Drop a pin or enter coordinates for your bid site. WeatherWise pulls 45+ years of climate data for that exact location.
Define Activities & Thresholds
Specify your planned activities and the weather conditions that would stop each one. Use built-in defaults or customise to your specifications.
Calculate Weather Days
WeatherWise calculates expected weather days for each activity, broken down by month, so you know exactly what to include in your bid.
Export Allowance Tables
Export professional summary reports and allowance tables for your tender submission. Data-backed figures your client can trust.
Key Features
Everything you need to build defensible weather allowances into your construction tenders.
Site-Specific Historical Analysis
Weather allowances based on 45+ years of ERA-5 climate data at your exact project coordinates. No regional averages or generic assumptions.
Activity-Level Granularity
Different activities have different weather sensitivities. Get weather day counts specific to crane lifts, earthworks, concrete pours, and every other activity in your programme.
Monthly & Seasonal Breakdown
See how weather risk varies month by month at your site. Plan critical activities around the windows that offer the best conditions and price accordingly.
Multi-Location Comparison
Tendering for multiple projects? Run analyses for all bid sites simultaneously and compare expected weather days across locations side by side.
Climate Change Adjustment
Historical patterns are weighted to reflect current and near-future conditions. Your weather allowances account for how the climate has changed, not just how it used to be.
Exportable Summary Reports
Generate professional PDF reports showing your weather allowance methodology and data sources. Designed to be shared with clients as part of your tender submission.
Bid With Confidence, Backed by Data
See how contractors are winning more tenders with data-driven weather allowances from WeatherWise.
Frequently Asked Questions
Can't find what you're looking for? Book a demo and we'll walk you through it.
How does this help win tenders?▾
Can I compare multiple locations?▾
Does it account for climate change?▾
What data is the analysis based on?▾
Can I share reports with clients?▾
Explore More
Calculate Your Weather Allowance Free
No card required. Enter your site coordinates and get data-driven weather allowances for your next tender in minutes.